This brief summarizes findings on class size from over 25 years of work on the Tennessee Student Teacher Achievement Ratio (STAR) randomized, longitudinal experiment, and other Class-Size Reduction (CSR) studies throughout the United States, Australia, Hong Kong, Sweden, Great Britain, and elsewhere. The brief concludes with recommendations. The…

A 4-year longitudinal study in Tennessee, called the Student-Teacher Achievement Ratio (STAR) Project, examined the effects of class size on student achievement in kindergarten through grade 3. More than 6,000 students from 75 schools in 42 school systems were included in the study. There were three class sizes: small class (13-17 students),…

Review of tracking research reveals a small number of well-designed studies with equivocal results. The Tennessee Class Size Study demonstrates convincingly that student achievement is better in smaller K-3 classes and the effect continues later in regular-sized classes. More randomized, controlled field trials such as this are needed. (SK)

Discusses Project STAR, a four-year study of class size reduction on student achievement in the early elementary grades. The paper reviews research on class size, puts Project STAR in context, describes its design and introduces several articles noting research implications for policy debate about class size. (SM)

Four initiatives to reduce class size are before the California State Legislature--SB 1414, AB 2449, the Governor's proposal, and AB 2821. Three of them were influenced by the findings reported by Tennessee's Project Student Teacher Achievement Ratio (STAR). Project STAR is a longitudinal demonstration project that since 1985 has examined the…

Summarizes a major longitudinal study (Project STAR) conducted in Tennessee between 1985 and 1989, provides some results updating STAR findings through 1992, and suggests research-based courses of action. Class-size research in primary grades is showing the efficacy of small classes of 1:15. Application of early experimental results in 17 poor…

Four studies were conducted to ascertain the long term effects of reducing class size in primary grades. Study One compared the effect of class size reduction on one school system when all students' scores were compared. Study Two was a repeated measures cohort study in which the scores of 193 students who had attended reduced size classes in the…

This article reports the Project STAR interview study that examined changes in K-3 teacher perceptions after teaching for a year in small classes or regular classes with aides. Teachers believed small classes or aides changed teaching and learning. They became more effective and satisfied and provided more individual attention. (SM)

A short overview of an experimental evaluation of lower teacher-pupil ratios is presented in this report. The research under review is the Student Teacher Achievement Ratio (STAR) project. This longitudinal project was conducted in Tennessee and was designed to prove to state legislators the efficacy of smaller class sizes. For STAR, evaluation…

Tennessee's four-year Project STAR provided one-third class size reduction in early elementary school. Small class students in all types of schools scored significantly higher than regular class students in reading and math. The article discusses lessons learned and cost-effective ways to reduce class size. (SM)

Estimated the impact of class size on instructional practices and the use of time in high school mathematics and science courses using data from the National Education Longitudinal Study. Findings reveal that class size has an impact on the use of class time, both instructional and noninstructional. (SLD)

This paper begins by describing the basic design and scope of Tennessee's Student Teacher Achievement Ratio (Project STAR), which began in 1985. The project was designed to determine the effect of reduced class size on the achievement and development of students in kindergarten through grade three. Findings that demonstrated that students in…

Paper summarizes policy and research implications of several studies on Project STAR, noting relationships between class size and student achievement, class size and teaching, and theories of class size effects. It recommends using class reduction to improve achievement and suggests future research on teaching styles, curriculum objectives, and…

Despite evidence from the USA that children in small classes of less than 20 do better academically there is still a vociferous debate about the effects of class size differences in schools, and considerable gaps in our understanding of the effects of class size differences. This article summarises results from the most complete UK analysis to…

This study investigated the possible causes of the contradiction between the results of two projects. Indiana's Prime Time project compared the achievement of students in large (averaging 26 students) and small (averaging 19 students) classrooms in grades 1 through 3. Results indicated that 3 years in smaller classes had little effect on student…