Class-size reduction - Knowledge (XXG)

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the 112 peer-reviewed studies. However, one prominent study looking at the program's effect on long-term average wage earnings of students who participated in STAR by linking the data from the experiment to IRS tax records 26 years later disagrees. One of the main findings of this study was that class size does not have a significant effect on earnings by age 27. However, the authors themselves do not consider their evidence to be conclusive and should thus be discounted. One valid finding, though, was that students who had teachers with greater education training and work experience were more likely to achieve higher earnings later in life. Additional findings were that students who were put into smaller classes were more likely to graduate high school and to, later, attend college.

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compare outcomes. The state exam was also new, making it difficult to compare achievement gains to past trends. Additionally, some researchers have noted that the program lacked adequate funding to be properly implemented. One serious drawback of this program is that it was much tougher for schools in lower-income communities to benefit as they were already struggling to retain high-quality teachers and maintain a sufficient quantity of classrooms. Thus, schools in higher-income communities, that already had average class sizes around 20 students, most benefited from this program—increasing inequality within the education system.

26: 260:. The intent was to upgrade the quality of early school experiences by reducing class sizes. The Indiana General Assembly appropriated $ 300,000 for the 1981–82 and 1982-82 school years to pilot PRIME TIME in nine schools, grades K-3, across Indiana. In 1983, the General Assembly increased PRIME TIME's funding for 1983-84 and 1984–85 to $ 2 million. This increased funding allowed for PRIME TIME's expansion in first grade. The program was expanded to second grade in 1985 and by the fall of 1987, it covered kindergarten through third grade. 69:

pronounced for lower-income students and children of color, who experience two to three times the gains from smaller classes, leading CSR to be one of only a few education reforms proven to reduce the achievement gap. Smaller classes have also been found to have a positive impact on school climate, student socio-emotional growth, safety and suspension rates, parent engagement, and teacher attrition, especially in schools with large numbers of disadvantaged children.

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income, parents’ criminal history, and family structure". The report goes on to explain that it is equally important, if not more so, for public policy to focus on improving resources of the family rather than those of the school. This could suggest that policies attempting to reduce class size might not have as significant effects on a student's educational achievement as would a policy that reduces a student's level of poverty.

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pupil-teacher ratios for black and white students between 1971 and 1999 accounted for nearly all of the narrowing of the black-white test score gap over that period, as measured by the NAEP exam. In addition, they concluded that smaller classes in grades K-3 would lead to a narrowing of the black-white gap in taking college entrance exams by 60%, and would shrink the gap in scores on these exams.

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and/or engaging in disruptive acts) and increases in pro-social behavior (i.e., following rules and interacting positively with the teacher as well as collaborating with other children). In one class size study in North Carolina, disciplinary referrals decreased sharply in the two years after small classes were implemented, with a 26% drop in the first year and a 50% drop in the second year.

349: 49:) aims to increase the number of individualized student-teacher interactions intended to improve student learning. A reform long holding theoretical attraction to many constituencies, some have claimed CSR as the most studied educational reform of the last century. Until recently, interpretations of these studies have often been contentious. Some educational groups like the 451: 119:

at a given school divided by the complete enrollment of that school. This distinction is significant, because the ratio will not always match up with the class size figure (or vice versa). For example, a student-teacher ratio may be small but a class size may be larger than what the student-teacher ratio leads one to believe.

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et al. (2013) investigated the effects of small class sizes on postsecondary attainment and degree completion and estimated that assignment to small classes increased the probability of attending college by 2.7 percentage points, with effects more than twice as large among blacks. Among students with

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A literature review by Wilson (2002) noted that results from the Tennessee STAR study, a large-scale randomized experiment in grades K-3, showed that grade retention was lower for students in small classes: 17% of students from small classes were held back, compared with 30% and 44% respectively from

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Bohrnstedt and Stecher (1999) found that parents of students in reduced size classes had more contact with teachers and were more satisfied with their children's education. 74% of parents reported initiating contact with their children's teachers, compared with 69% of parents in non-reduced classes.

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Babcock and Betts (2009) investigated the mechanism through which smaller classes boost academic achievement and found that small class sizes better enabled teachers to engage “low-effort” students, as defined by a below average tendency to begin work promptly, behave appropriately in class, exhibit

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For a study commissioned by the US Department of Education, McLaughlin et al. (2000) analyzed the performance of students in over 2500 schools on state exams adjusted for difficulty via their scores on the NAEP (national) exams. The analysis showed that after controlling for student background, the

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Research on the effects of class size reduction has linked small class sizes with a variety of cognitive and non-cognitive benefits for students and teachers, both short and long-term, especially when class sizes are reduced in the early grades. In fact, class size reduction is one of only a handful

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There has been a lot of controversy surrounding the program, with some critics arguing it had disappointing or null results. Because nearly all elementary schools in the state reduced class size at once, especially in grades K-2, it was difficult for researchers to find a control group with which to

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In a British study, students were closely observed by teams of researchers who recorded their “moment to moment” behaviors in blocks of 10-second intervals. The researchers found that adding five students to a class decreased the odds of students’ being on task by nearly a quarter. In classes of 30,

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In 2002 the state of Wisconsin began its own investigations into “the wisdom of class size reduction," by initiating Project SAGE (Student Achievement Guarantee in Education). In all, nine low income schools were studied, their locations spanning urban, semi-urban, and rural geographies. Evaluation

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Dubbed the Lasting Benefits Study, the second phase began in 1989 and sought to determine whether the benefits of CSR persisted into upper grades when all students entered standard size classes. Observations confirmed that children originally enrolled in smaller classes continued to outperform their

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The first phase, termed Project STAR (Student-Teacher Achievement Ratio), randomly assigned teachers and students to three groups, “small” (13 to 17), “regular” (22 to 25) classes with a paid aide, and “regular” (22 to 25) classes with no aide. In total some 6,500 students in about 330 classrooms at

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However, teacher magazine polls show that greater than 70% of current teachers cite large class sizes as one of their primary barriers to both job satisfaction and their ability to teach. This has led proponents of class size reduction argue that CSR is in fact highly cost effective. They note that

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Though teacher training may improve CSR outcomes, research has demonstrated the benefits of CSR even without any instructional changes. A book reviewing evidence and perspectives on class size from around the world concludes that "Project STAR produced gains without any changes in the curriculum or

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Bascia (2010) summarized a study conducted by the University of Alberta. After interviewing parents, researchers found that they were encouraged by being able to meet with teachers more frequently. The report also cited evidence from a study of Ontario's class size reduction initiative showing that

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for students in ‘regular’ and ‘regular plus aide’ classes respectively. Similarly, school attendance was significantly higher for tenth graders who had been assigned to small classes in the early years (16 days per year of absence compared to 23 and 24 for ‘regular’ and ‘regular plus aide’ classes).

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Wilson (2002) analyzed Tennessee STAR data, showing that there were lower suspension rates in later grades among students who had been in small classes in the early years. Tenth grade students who had been in small classes in K-3 were suspended on average 0.32 days, compared with 0.62 and 0.77 days

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had increased. Teacher quality worsened because schools had to dig deeper down in the barrel to find teachers, who were typically less educated and less experienced. The percent of teachers not fully certified, yet teaching, in high-poverty schools increased from 6% in 1995 to 20% by 2001 and 1% to

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has called into question the validity of the study on Project STAR, arguing that the bulk of scientific research on small-class sizes shows no or statistically insignificant effects and that there must be another explanation, like flawed random assignment, that produced the result rather than small

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To differentiate student-teacher ratio and class size, it is important to know several key distinctions. Class size, generally speaking, refers to the average class size in a given grade level of a given school. Student-teacher ratios, normally, are calculated by taking the total number of teachers

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An analysis of the Tennessee STAR study demonstrated that the economic benefits from higher achievement alone would be expected to yield twice the cost of reducing class size. A meta-analysis of CSR literature revealed that the benefits of smaller class size outweighed the cost in all but three of

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Finn et al. (2003) analyzed the relationship between class size and learning behavior, social behavior, and teaching styles, showing a positive relationship between reduced class size and outcomes in all three areas. Reduced class size was linked with increased academic engagement, student effort,

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In a review of the literature, Finn et al. (2003) analyzed 11 separate class size studies, and nearly all showed a positive impact of smaller classes on students' learning behavior, including decreases in anti-social behavior (i.e., withdrawing from interactions with the teacher or other students

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from reducing class size from 22 to 15 students is around 6 percent. In more recent years, Hanushek has defended his work in his book "Money Might Matter Somewhere", in which he argues that the amount of money spent per pupil is not as important a factor towards student achievement inasmuch as how

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reanalyzed the data on which Hanushek based this claim and found that Hanushek "places a disproportionate share of weight on a small number of studies that frequently used small samples and estimated misspecified models." When this is corrected, the literature actually reveals a strong correlation

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Smaller classes provide opportunities for teachers to engage in practices that improve student achievement. However, some researchers worry whether teachers will take full advantage of these opportunities, arguing that they tend to use the same strategies (primarily lecturing) with both large and

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a third (30%) of new teachers (1-5 years of experience) in NYC said that it was unlikely that they would be teaching in a NYC school in the next three years. For those teachers who were thinking of leaving NYC public schools, the top three changes in their work conditions most likely to persuade

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Finn et al. (2005) concluded that three years or more of small classes in the early grades increased the odds of graduating from high school of low-SES students by about 67%. Four years of small classes in the early grades more than doubled the odds. The graduation rates for low-income students

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A review by Zyngier (2014) of the research literature showed that smaller classes had a strong positive impact on student achievement and narrowing the achievement gap in the vast majority of studies. The benefits of smaller class size outweighed the cost in all but three of the 112 peer-reviewed

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In an analysis of national longitudinal data of eighth graders, Dee and West (2011) found that reductions in class size were associated with improvements in non-cognitive skills related to psychological engagement with school, more positive reactions to teachers, peers, and academics in general,

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The Coleman Report, published in 1966, concluded that family background matters significantly more to a student's academic achievement than any resources a school can offer. The exact factors defining "family background" that this report focused on were "parents' educational attainment, parents'

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Contrary to some class-size studies conducted in the United States, the British researchers found no “threshold effect” in their study. In other words, classes did not have to be reduced to 15 or 20 students before the behavioral benefits started to kick in. Reducing class size at any end of the

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Despite these limitations and concerns, controlled studies of the effects of California's CSR program showed significant achievement gains from smaller classes, even among third graders who were only in the program for one year. Researchers found, for example, that students who were in reduced

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The two most prominent CSR studies are Project STAR, which was conducted in the mid- to late-80s in Tennessee and Project SAGE, conducted in the early 2000s in Wisconsin. Studies following the work of Project STAR and SAGE found that, even when reintroduced to larger class-sizes later in their

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K–3 CSR Program was established in 1996 to improve education, especially in reading and mathematics, by reducing class sizes in kindergarten through grade three. The K–3 CSR Program provided funds to public and charter schools that reduced their class sizes to 20 pupils per certified teacher,

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Subsequent research on the effects of class size reduction has linked small class sizes with a variety of cognitive and non-cognitive benefits for students and teachers, both short and long-term, especially when class sizes are reduced in the early grades (K-3). Its benefits are particularly

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Schanzenbach (2014) summarized the benefits of class size reduction and its efficacy in narrowing the achievement gap in a report for the National Education Policy Center (NEPC). She concluded that significant savings would be produced from higher graduation rates and increased employment,

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Based on STAR data, Krueger and Whitmore (2002) estimated that if all students were assigned to a small class in grades K-3 for one to four years, the black-white test-score gap would drop by 38 percent in grades K-3 and by 15 percent thereafter. They also estimated that national trends in

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One primary difficulty encountered by the SAGE project was the availability of funds for teachers but not space. Each district was then left to this potential problem in their own unique way. In schools constrained by space this often involved tag-team teaching rather than increased

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Reducing class size is among an even smaller number of education reforms that have been shown to narrow the achievement gap. Its benefits are particularly pronounced for lower-income students and children of color, who experience two to three times the gains from smaller classes.

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higher levels of interest and motivation, lower levels of boredom and anxiety, and a greater sense of belonging. Students in small classes were more likely to look forward to class, believe that the subject was useful for their future, and were less afraid to ask questions.

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Bascia (2010) summarized the impacts of class size reduction, noting that teachers were able to interact with individual students more frequently and use a greater variety of instructional and differentiated strategies. Students were more engaged and less disruptive in the

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Dee (2004) looked at the effects of student-teacher racial mismatch on academic achievement in small classes. He found that while racial mismatch of teacher and student had negative effects on academic achievement in regular sized classes, this effect was absent in small

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Using data from the Tennessee STAR study, Krueger (2003) demonstrated that smaller class sizes in grades K-3 led to significant gains in test scores and that the economic benefits from higher achievement alone would be expected to yield twice the cost of reducing class

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math exams in 4th grade than students from larger classes. The most significant result of this program was that class sizes, across the state, were, on average, reduced. Some other significant effects of the program were that teacher quality had decreased and the use of

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the money is spent. In other words, Hanushek argues that giving a student $ 10,000 worth of pens and pencils would not impact their overall student achievement as much as, say, a $ 10,000 investment into training and development for that student's teacher.

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Smaller classes have also been found to have a positive impact on school climate, student socio-emotional growth, safety and suspension rates, parent engagement, and teacher attrition, especially in schools with large numbers of disadvantaged children.

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et al. (2005) examined data from teacher surveys and school-level data to determine the relationship between occupational conditions and teacher turnover. They found that the presence of very large classes significantly increased teacher

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Dynarski, Susan, Joshua Hyman, and Diane Whitmore Schanzenbach. 2013. “Experimental Evidence on the Effect of Childhood Investments on Postsecondary Attainment and Degree Completion.” Journal of Policy Analysis and Management 32(4):

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A report from the Pennsylvania State Education Association (2008) noted that smaller classes improved teacher morale, which translates into higher rates of teacher attendance, reduced costs for substitute teachers and less teacher

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In a study examining the effect of a variety of inputs on student achievement in majority Latina/o schools, Heilig et al. (2010) found that the reduction in student-teacher ratios was the largest predictor of increases in student

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rewarding each school with $ 850 per student that was in one of these smaller classes. As a result, the program was consuming 6% of the state's general education budget by 2001 and had, thus far, cost a total of $ 22 billion.

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is currently understood by the educational community to be the best measure of a teacher's "true opportunity to build direct relationships with each student." A more malleable definition and one now held in dubious regard,

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initiative taking in the classroom and time on task. Additionally, teachers of small classes were able to get to know each student more intimately and their tolerance for a broader range of student behaviors was increased.

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Krueger and Whitmore (2002) found that the teen birth rate was one third lower for white girls if they had been assigned to smaller classes in the early grades, and the teen fatherhood rate for black teenage males was 40%

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low teacher retention rates lead to higher retraining costs and contribute to the current lack of qualified teachers. When faced with a constant flux of new teachers, student achievement has also been shown to suffer.

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et al. (2013) concluded that smaller classes significantly increased the probability of a student attending college, earning a college diploma, and earning degrees in a STEM field (science, technology, engineering, or

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In the past, depending on which measure was used, researchers tended toward far different interpretations of the benefits of class size reduction leading to far different recommendations for implementation. In 2002,

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Achilles (2012) concluded that poor, minority, and male students received especially large benefits from reduced class size in terms of improved test scores, school engagement, and lower grade retention and dropout

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After analyzing Social Security data, Wilde et al. (2011) estimated that Black students who were randomly assigned to a small class size in the early grades had significantly higher employment rates and earnings as

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In a meta-analysis by Glass and Smith (1978), small class sizes (20 students or less) were associated with improved academic performance. Effects were strongest in the early primary grades and among low-income

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Konstantopoulos and Chung (2009) concluded that while all types of students benefit in later grades from being in small classes in early grades, low achievers benefited more, especially in reading and science.

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Pas Isenberg (2010) found that a decrease in class size from 23 to 20 students in New York State under a district-wide policy decreased the probability that a teacher would leave the school by 4.2 percentage

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Teachers of smaller class sizes reported themselves as more productive and efficient, had improved morale and better communication with parents, and were able to increase individualized attention to students.

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Penny Fidler. "The Relationship Between Teacher Instructional Techniques and Characteristics and Student Achievement in Reduced Size Classes," Los Angeles Unified School District, Publication No. 120, March

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Wilde E.T., J. Finn, G. Johnson, P. Muennig. 2011. “The effect of class size in grades K-3 on adult earnings, employment, and disability status: evidence from a multi-center randomized controlled trial.”

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A 2020 study in the Journal of Human Resources found no evidence that class-size reductions in Norway had any significant impact on students' long-run educational outcomes and long-run economic outcomes.

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Hattie, J. (2005, August), What is the nature of evidence that makes a difference to learning? Keynote address presented at the 2005 Research Conference, Lumina Grand Hyatt Hotel, Melbourne, 7–9 August

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Ingersoll (2015) noted that job dissatisfaction is the leading factor behind teacher turnover, with 54% of teachers who leave their school reporting that large class sizes contributed to their decision.

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Mathis (2016) noted that the positive effects of class size reduction are twice as large for poor and minority students, in a literature review for the National Education Policy Center (NEPC) report.

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only factor positively correlated with student test scores was the class size. In this study, student achievement was even more strongly linked to smaller classes in the upper than the lower grades.

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educational career, the positive foundation for learning caused students to later in life to be more likely to take advanced classes, graduate from high school, attend college, and major in a

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Yongyun Shin (2012) found that for Black students, reduced class size in grades K-3 led to significantly higher academic achievement in reading, math, listening, and word recognition skills.

1813:(2003) U.S. Department of Education, Institute of Education Sciences, National Center for Education Evaluation, and Regional Assistance, and the Coalition for Evidence-Based Policy 243:. Although no significant differences were observed in the gains of both male and female students, improved outcomes were again larger amongst minority and disadvantaged students. 103:

would declare a situation in which one teacher leads a class while another does paperwork in the back but does not interact with students as being half as large as its group size.

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are in favor of reducing class sizes. Others argue that class size reduction has little effect on student achievement. Many are concerned about the costs of reducing class sizes.

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A Campbell Systematic Reviews meta-analysis examined the effect of class-size reduction on achievement and found small gains in reading and no evidence of gains in mathematics.

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Harold Urman, “The Effects of Class Size Reduction on Students’ Achievement, English Proficiency Designation, Retention in Grade, and Attendance,” Vital Research, July 2000.

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A 2013 study in the Quarterly Journal of Economics found that smaller class sizes in Sweden had positive effects on educational outcomes and cognitive outcomes for students.

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class size. However, subsequent research has questioned Hanushek's claim that "there is no strong or consistent relationship between school inputs and student performance".

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peers when they returned to regular-sized classrooms. These results were deemed true for all types of classes and all types of cities (rural, suburban, and metropolitan).

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Hanushek, E. A. (1997). ‘Assessing the effects of school resources on student performance: an update’, Educational Evaluation and Policy Analysis, vol. 19(2), pp. 141–64.

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based testing, the initial study concluded that small classes produced “substantial improvement in early learning and cognitive studies” with the effect about double for

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Students in PRIME TIME classes had fewer behavioral issues, better self-esteem and responsibility, greater time on task, and were less likely to be held back a grade.

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Zyngier's meta-analysis (2014) revealed that of 112 peer-reviewed studies, the overwhelming majority found that smaller classes helped to narrow the achievement gap.

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Konstantopoulos, Spyros and Vicki Chung. 2009. “What are the Long-term Effects of Small Classes on the Achievement Gap? Evidence from the Lasting Benefits Study.”

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students. As this is considered the seminal study (in an area that has received much political attention) there have been many attempts to reinterpret the data.

875:"Some Findings from an Independent Investigation of the Tennessee STAR Experiment and from Other Investigations of Class Size Effects | Eric A. Hanushek" 1126:

McLaughlin, Donald, Gili Drori, and Michael Ross. 2000. “School-level Correlates of Academic Achievement: Student Assessment Scores in SASS Public Schools.”

523:‘regular’ and ‘regular plus aide’ classes. Also, fewer students that had been in smaller classes in the early grade had dropped out of school by tenth grade. 166:

were adequately funded to provide smaller class sizes for their K-3 students. These districts improved their end-of-year- standing (among 139 districts) in

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Heilig, Julian Vasquez, Amy Williams, and Su Jin Jez. 2010. “Inputs and Student Achievement: An Analysis of Latina/o-Serving Urban Elementary Schools.”

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Penny Fidler, "The Impact of Class Size Reduction on Student Achievement," Los Angeles Unified School District, Publication No. 109, September 7, 2001.

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Shin, Yongyun. 2012. “Do Black Children Benefit More from Small Classes? Multivariate Instrumental Variable Estimators with Ignorable Missing Data.”

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Rice, J. K. (1999). The impact of class size on instructional strategies and the use of time in high school mathematics and science courses.

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6% in low-poverty schools. As to why achievement gains were greater for high-poverty minority students, the Coleman Report has a lot to say.

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Pas Isenberg, Emily. 2010. “The Effect of Class Size on Teacher Attrition: Evidence from Class Size Reduction Policies in New York State.”

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of K12 reforms cited by the Institute of Education Sciences (2003) as proven to increase student achievement through rigorous evidence.

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Loeb, Susanna, Linda Darling-Hammond, and John Luczak. 2005. “How Teaching Conditions Predict Teacher Turnover in California Schools.”

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any focused teacher training. Small classes in and of themselves produced benefits," as was also the case in Wisconsin and California.

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Finn, Jeremy D., Gina M. Pannozzo, and Charles M. Achilles. 2003. “The Why's of Small Class Size: Student Behavior in Small Classes.”

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included site visits, standardized assessments, collection of curriculum, and interviews with teachers, principals, and students.

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called Project Prime Time and the potential large scale costs of additional classrooms and teachers, in 1985, under then Governor

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Babcock, Philip and Julian R. Betts. 2009. “Reduced-class distinctions: Effort, ability, and the education production function.”

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Brian Stecher and George Borhnstedt eds., “Class Size Reduction in California: Findings from 1999–00 and 2000–01,” 2002, p. 72.

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Finn et al. (2005) found that four years of a small class in K–3 improved the odds of graduating from high school by about 80%.

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small groups. This concern has led some to advocate for teacher training to unlock the full potential of reduced class sizes.

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with three or more years in a small class were at least as high as those of higher income students, closing the income gap.

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to consider whether implementing or broadening class-size-reduction policies is feasible in a time of major budget cuts.

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Mosteller, F. (1995). The Tennessee study of class size in the early school grades. The Future of Children, 5, 113-127.

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Stasz, C., & Stecher, B. M. (2002). Before and after class size reduction. In J. D. Finn & M. C. Wang (Eds.),

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Krueger, Alan B., & Whitmore, D. M. 2002. "Would Smaller Classes Help Close the Black-White Achievement Gap?"

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Fatih Unlu, “California Class Size Reduction Reform: New Findings from the NAEP,” Princeton University, Nov. 2005

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many parents reported a better relationship with teachers when their children were assigned to a smaller class.

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Ehrenberg, R. G., Brewer, D. J., Gamoran, A., & Willms, J. D. (2001). Class size and student achievement.

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Ingersoll, Richard M. 2015. “Why Schools Have Difficulty Staffing Their Classrooms with Qualified Teachers.”

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Fredriksson, Peter; Öckert, Björn; Oosterbeek, Hessel (February 1, 2013). "Long-Term Effects of Class Size".

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Filges, Trine; Sonne‐Schmidt, Christoffer Scavenius; Viinholt Nielsen, Bjørn Christian (October 11, 2018).

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the lowest probability of attending college, the increase in college attendance was 11 percentage points.

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Blatchford, Peter; Chan, Kam Wing; Galton, Maurice; Lai, Kwok Chan; Lee, John Chi Kin (April 28, 2016).

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Parents who had children in smaller classes also gave higher ratings to every aspect of their schooling.

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An early complication in measuring the efficacy of class size reduction was the tendency for different

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Students who go on to finish their education also bring more value to their communities causing some

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them to stay included a new contract with higher pay, smaller classes, and better student discipline.

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low-attaining students were nearly twice as likely to be disengaged as they were in classes of 15.

206:. Changes in teaching methods that take full advantage of smaller class sizes will also be needed. 406: 1271: 108: 38: 17: 800:, edited by Susan E. Mayer and Paul E. Peterson (Washington, DC: Brookings Institution): 131-168 793: 1665: 1322: 268: 1635:

In R. Slavin (Ed.), School and classroom organization (pp. 247-257). Hillsdale, NJ: Earlbaum.

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Dee, Thomas S. 2004. “Teachers, Race, and Student Achievement in a Randomized Experiment.”

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Graue, M. E., Hatch, K., Rao, K., & Oen, D. (2007). The wisdom of class size reduction.

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Class Size Reduction in California 1996-1998: Early Findings Signal Promise and Concerns.

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Small Classes in the Early Grades, Academic Achievement, and Graduating from High School,

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Graue, E., Hatch, K., Rao, K. & Oen, D. (2007). The wisdom of class-size reduction.

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Graue, E., Hatch, K., Rao, K. & Oen, D. (2007). The wisdom of class-size reduction.

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to suggest that smaller class sizes may pay for themselves internally, although other

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Dee, Thomas S. and Martin R. West. 2011. “The Non-Cognitive Returns to Class Size.”

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Correlation between class size and reading performance from the results of the U.S.

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National Education Policy Center and University of Colorado Boulder. Boulder, CO.

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Class Size Reduction: PSEA Promising Practices to Close Student Achievement Gaps.

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National Education Policy Center and University of Colorado Boulder. Boulder, CO.

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Biddle, Bruce J.; Berliner, David C. (2002). "Small class size and its effects".

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requires careful adaptation. Every classroom has a unique and specific context.

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in the literature. As a direct measure of the number of students in each class,

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According to a NY City Council survey (2004) of public school teachers, nearly

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between reduced class size and academic performance and suggests that the

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U.S. Department of Education's National Center for Education Statistics.

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with parents, and (as with Project STAR) long term increases in student

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http://www.equality-of-opportunity.org/assets/documents/star_paper.pdf

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Class-size Policy: The Star Experiment and Related Class-size Studies.

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University of Glasgow: The Scottish Council for Research in Education.

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Under the third phase, Project Challenge, the 17 economically poorest

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Cahen, L. S., Filby, N., McCutcheon, G., & Kyle, D. W. (1983).

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Project PRIME TIME was proposed in 1981 by former Indiana Governor

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Krueger, Alan B. 2003. “Economic Considerations and Class Size.”

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Evidence Base: A Journal of Evidence Reviews in Key Policy Areas

202:(1) Class size implementation alone is insufficient to promote 1158:

Finn, Jeremy D., and Susan B. Gerber and Jayne Boyd-Zaharias.

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National Council of Professors of Educational Administration.

1773:"How Does Your Kindergarten Classroom Affect Your Earnings?" 1633:

Achievement effects of substantial reductions to class size.

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School Climate and Non-Cognitive or Socio-Emotional Factors

209:(2) Class size reduction may have unintended consequences. 267:

PRIME TIME students made improvements in reading and math

132:

Aware of both the preliminary results of a CSR program in

1106:"Meta-Analysis of Research on Class Size and Achievement" 1410:

Journal of Educational and Behavioral Statistics, 37(4).

1648:(pp. 19-50). Greenwich, CT: Information Age Publishing. 472: 1242:"Long-Term Impacts of Class Size in Compulsory School" 1089:"How Family Background Influences Student Achievement" 227:

Results from the study demonstrated increased teacher

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U.S. Bureau of the Census Center for Economic Studies

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classes in grades K-3 had slightly higher scores on

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Journal of Health Care for the Poor and Underserved

1524:Bohrnstedt, George W. and Brian M. Stecher. 1999. 598:particularly among low-income and minority groups. 33:reading tests given in 2005 to 4th and 8th graders 1383:Association of Mexican American Educators Journal 999: 997: 995: 948:Weis, Trish (Fall 1990). "Indiana's PRIME TIME". 170:and reading from below average to above average. 1565:Pennsylvania State Education Association. 2008. 839:Psychological Science and the Public Interest, 2 1620:Educational Evaluation and Policy Analysis, 21 8: 1661:Class Size: Eastern and Western perspectives 1592:Consortium for Policy Research in Education. 1502:Canadian Education Association. Toronto, ON. 199:The guiding assumptions of the study were: 31:National Assessment of Educational Progress 1537:NYC Council Investigation Division. 2004. 1513:Educational Evaluation and Policy Analysis 1455:The Effectiveness of Class Size Reduction. 715:Given the current uncertainty of national 609:Safety, Attendance and Disciplinary Issues 1539:Report on Teacher Attrition and Retention 1316: 1306: 1265: 1240:Leuven, Edwin; Løkken, Sturla A. (2020). 1200: 1005:American Educational Research Journal, 44 933:American Educational Research Journal, 44 826:American Educational Research Journal, 44 433:Learn how and when to remove this message 271:in kindergarten, first and second grades. 111:, secretary of education under President 1800:Social Educational Emotional Development 1737:"Economic Considerations and Class Size" 798:Earning and learning: How schools matter 750: 638:self-discipline, and follow directions. 144:approximately 80 schools participated. 1767: 1765: 1357:The Review of Economics and Statistics 1083: 1081: 369:Please improve this article by adding 224:(lowering of PTR but not class size). 87:camps to use different definitions of 1735:Krueger, Alan B. (February 1, 2003). 1646:Taking small classes one step further 1500:Reducing Class Size: What Do We Know? 1494: 1492: 1465: 1463: 1338: 1336: 1216: 1214: 1212: 1154: 1152: 1138: 1136: 977: 975: 973: 971: 943: 941: 897: 895: 893: 7: 1144:Does Small Really Make a Difference? 810: 808: 806: 719:, some commentators have encouraged 291:class-size spectrum seemed to help. 1181:The Quarterly Journal of Economics 14: 1471:Journal of Educational Psychology 1167:Journal of Educational Psychology 1716:. Edweek.org. September 10, 2008 1710:"Teacher Magazine: Reader Polls" 449: 347: 263:Results from the study showed: 981:Bohrnstedt and Stecher (1999). 711:Economics of smaller classrooms 51:American Federation of Teachers 1827:Education in the United States 1781:. Retrieved November 28, 2017. 1095:. Retrieved November 28, 2017. 1018:"The Evidence from California" 989:. Retrieved November 28, 2017. 922:. Retrieved November 28, 2017. 852:"How important is class size?" 464:format but may read better as 55:National Education Association 1: 1794:Class-Size Reduction Research 1604:Class size and instruction: A 1370:American Journal of Education 1346:Brookings Institution Press. 1344:Bridging the Achievement Gap. 1221:Zyngier, David (March 2014). 1087:Egalite, Anna (Spring 2016). 794:“The Evidence on Class Size,” 371:secondary or tertiary sources 123:Project STAR and Project SAGE 1771:Chetty et al. (March 2011). 1554:Peabody Journal of Education 1258:10.3368/jhr.55.2.0217.8574R2 147:Using both standardized and 1420:Achilles, Charles M. 2012. 1295:Campbell Systematic Reviews 914:Hanushek, Eric (May 1994). 1843: 1484:Journal of Urban Economics 1246:Journal of Human Resources 295:California K-3 CSR Program 222:individualized instruction 76: 15: 1807:from classsizematters.org 1805:Fact Sheets on Class Size 1796:from classsizematters.org 1453:Mathis, William J. 2016. 239:rates and admission into 1528:CSR Research Consortium. 905:113 (February): F34-F63. 73:Definition of class size 16:Not to be confused with 1756:10.1111/1468-0297.00098 1442:Does Class Size Matter? 1142:Wilson, Valerie. 2002. 473:converting this article 184:internal rate of return 956:(1). Terre Haute: 31. 950:Contemporary Education 773:Educational Leadership 382:"Class-size reduction" 358:relies excessively on 99:pupil to teacher ratio 34: 229:satisfaction with job 28: 1744:The Economic Journal 1498:Bascia, Nina. 2010. 1108:. September 13, 2016 903:The Economic Journal 509:Academic Achievement 43:class size reduction 1631:Slavin, R. (1989). 1308:10.4073/csr.2018.10 319:combination classes 204:student achievement 1608:New York: Longman. 1193:10.1093/qje/qjs048 920:Hoover Institution 475:, if appropriate. 282:Benefits in the UK 269:standardized tests 252:Project PRIME TIME 109:Margaret Spellings 39:educational reform 35: 18:Class reductionism 1581:. Washington, DC. 717:financial markets 666:Teacher Attrition 651:Parent Engagement 494: 493: 443: 442: 435: 417: 247:Other CSR Studies 174:Dr. Eric Hanushek 1834: 1782: 1769: 1760: 1759: 1750:(485): F34–F63. 1741: 1732: 1726: 1725: 1723: 1721: 1706: 1700: 1699: 1697: 1695: 1690: 1686:"Quality Counts" 1682: 1676: 1675: 1655: 1649: 1642: 1636: 1629: 1623: 1616: 1610: 1600: 1594: 1588: 1582: 1575: 1569: 1563: 1557: 1550: 1544: 1535: 1529: 1522: 1516: 1509: 1503: 1496: 1487: 1480: 1474: 1467: 1458: 1451: 1445: 1431: 1425: 1418: 1412: 1406: 1400: 1392: 1386: 1379: 1373: 1366: 1360: 1353: 1347: 1340: 1331: 1330: 1320: 1310: 1286: 1280: 1279: 1269: 1237: 1231: 1230: 1218: 1207: 1206: 1204: 1176: 1170: 1156: 1147: 1140: 1131: 1124: 1118: 1117: 1115: 1113: 1102: 1096: 1085: 1076: 1073: 1067: 1064: 1058: 1054: 1048: 1045: 1039: 1036: 1030: 1029: 1027: 1025: 1014: 1008: 1001: 990: 987:RAND Corporation 979: 966: 965: 945: 936: 929: 923: 912: 906: 899: 888: 885: 879: 878: 871: 865: 862: 856: 855: 848: 842: 835: 829: 822: 816: 812: 801: 787: 781: 780: 768: 759: 755: 698:Teacher training 555:Achievement Gaps 489: 486: 480: 471:You can help by 453: 452: 445: 438: 431: 427: 424: 418: 416: 375: 351: 343: 179:Dr. Alan Krueger 164:school districts 1842: 1841: 1837: 1836: 1835: 1833: 1832: 1831: 1817: 1816: 1790: 1785: 1770: 1763: 1739: 1734: 1733: 1729: 1719: 1717: 1708: 1707: 1703: 1693: 1691: 1688: 1684: 1683: 1679: 1672: 1657: 1656: 1652: 1643: 1639: 1630: 1626: 1617: 1613: 1601: 1597: 1589: 1585: 1576: 1572: 1564: 1560: 1551: 1547: 1536: 1532: 1523: 1519: 1510: 1506: 1497: 1490: 1481: 1477: 1468: 1461: 1452: 1448: 1432: 1428: 1419: 1415: 1407: 1403: 1393: 1389: 1380: 1376: 1367: 1363: 1359:86(1): 195-210. 1354: 1350: 1341: 1334: 1288: 1287: 1283: 1239: 1238: 1234: 1220: 1219: 1210: 1178: 1177: 1173: 1157: 1150: 1141: 1134: 1130:Washington, DC. 1125: 1121: 1111: 1109: 1104: 1103: 1099: 1086: 1079: 1074: 1070: 1065: 1061: 1055: 1051: 1046: 1042: 1037: 1033: 1023: 1021: 1020:. 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Bush 77:Main article: 74: 71: 13: 10: 9: 6: 4: 3: 2: 1839: 1828: 1825: 1824: 1822: 1812: 1809: 1806: 1803: 1801: 1798: 1795: 1792: 1791: 1787: 1780: 1779: 1774: 1768: 1766: 1762: 1757: 1753: 1749: 1745: 1738: 1731: 1728: 1715: 1711: 1705: 1702: 1687: 1681: 1678: 1673: 1671:9781317643470 1667: 1664:. Routledge. 1663: 1662: 1654: 1651: 1647: 1641: 1638: 1634: 1628: 1625: 1622:(2), 399-414. 1621: 1615: 1612: 1609: 1605: 1599: 1596: 1593: 1587: 1584: 1580: 1574: 1571: 1568: 1562: 1559: 1555: 1549: 1546: 1543: 1540: 1534: 1531: 1527: 1521: 1518: 1515:33(1): 23-46. 1514: 1508: 1505: 1501: 1495: 1493: 1489: 1485: 1479: 1476: 1472: 1466: 1464: 1460: 1456: 1450: 1447: 1443: 1439: 1435: 1434:Schanzenbach, 1430: 1427: 1423: 1417: 1414: 1411: 1405: 1402: 1398: 1391: 1388: 1384: 1378: 1375: 1372:116: 125-154. 1371: 1365: 1362: 1358: 1352: 1349: 1345: 1339: 1337: 1333: 1328: 1324: 1319: 1314: 1309: 1304: 1300: 1296: 1292: 1285: 1282: 1277: 1273: 1268: 1267:11250/2477813 1263: 1259: 1255: 1251: 1247: 1243: 1236: 1233: 1228: 1224: 1217: 1215: 1213: 1209: 1203: 1198: 1194: 1190: 1186: 1182: 1175: 1172: 1168: 1165: 1161: 1155: 1153: 1149: 1145: 1139: 1137: 1133: 1129: 1123: 1120: 1112:September 26, 1107: 1101: 1098: 1094: 1090: 1084: 1082: 1078: 1072: 1069: 1063: 1060: 1053: 1050: 1044: 1041: 1035: 1032: 1024:September 27, 1019: 1013: 1010: 1007:(3), 670-700. 1006: 1000: 998: 996: 992: 988: 984: 978: 976: 974: 972: 968: 963: 959: 955: 951: 944: 942: 938: 935:(3), 670-700. 934: 928: 925: 921: 917: 911: 908: 904: 898: 896: 894: 890: 884: 881: 876: 870: 867: 861: 858: 853: 847: 844: 840: 834: 831: 828:(3), 670-700. 827: 821: 818: 811: 809: 807: 803: 799: 795: 791: 790:Eric Hanushek 786: 783: 778: 774: 767: 765: 761: 754: 751: 745: 743: 740: 737: 733: 728: 724: 722: 718: 710: 708: 704: 697: 692: 688: 684: 680: 677: 675: 670: 669: 665: 659: 655: 654: 650: 644: 640: 636: 632: 631: 627: 621: 617: 613: 612: 608: 603: 600: 596: 592: 589: 585: 582: 578: 574: 571: 567: 563: 559: 558: 554: 549: 546: 542: 539: 537:mathematics). 535: 532: 529: 525: 521: 517: 513: 512: 508: 506: 502: 498: 488: 479:is available. 478: 474: 468: 467: 463: 458:This article 456: 447: 446: 437: 434: 426: 415: 412: 408: 405: 401: 398: 394: 391: 387: 384: – 383: 379: 378:Find sources: 372: 366: 365: 361: 356:This article 354: 350: 345: 344: 338: 336: 329: 325: 323: 320: 315: 309: 305: 302: 294: 292: 288: 281: 276: 273: 270: 266: 265: 264: 261: 259: 258:Robert D. 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