Summarizes evidence for the effects of class-size reduction from experimental and nonexperimental measurements, addresses questions about the robustness of each type of estimate, and suggests hypotheses that could reconcile differences resulting from conflicting evidence. Discusses potential costs and the implications for future research into the…

Confusion over the concepts of class size and pupil-teacher ratio (PTR) creates a conundrum for researchers, policy makers, and practitioners. An examination of how these two concepts are different is presented in this paper. A review of the literature suggests that class-size reduction makes a positive overall difference in student achievement,…

Discussion and research concerning class size can be traced back at least to the 12th century. An overview of recent research on the subject is provided in this report. The paper, which serves as an introduction to a symposium on class size, examines research that has appeared in the past 20 years, but it concentrates on the results of a…

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…

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…

This report discusses the activities and outcomes of Special Instructional Assistance (SIA) an early intervention, prevention program designed to help Georgia students with identified developmental delays overcome the effects of those delays on academic achievement. The central tenet of the program is to provide more individualized instruction to…

During 1999/2000, the Saginaw, Michigan public schools implemented a reduced class size program in grades 1 and 2. At grade 1 (23 rooms), reduced-size classes were maintained at no more than 18 pupils; at grade 2 (5 rooms), the limit was 21 pupils. Comparison classes were identified to assess the impact of the program. Students in both conditions…

Much continues to be written about the failure of U.S. schools to provide a quality education for at-risk urban students. Private Nativity model schools have been instituted in response to the need to provide quality education at the middle school level for such students. As the number of these and other alternative middle schools increases, a…

The impact of class size reduction at the early levels on student achievement in various states is discussed in this report. The Tennessee Student Teacher Achievement Ratio (STAR) study, a statewide longitudinal evaluation of the effects of class size on student achievement and development in primary grades K-3, analyzed demographic and basic…