Competing explanations of class size reduction effects on student academic achievement were tested using student, teacher, and school data collected from nearly 700 classrooms in over 70 schools during the first 3 years of implementation of California's (K-3) Class Size Reduction Program. Five major hypotheses were tested: (1) overall impact of…

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…

This study examined the impact of smaller class size on elementary student achievement, focusing on types of instructional strategies utilized, student time on task, academic focus of the classroom, and types of interactions between teachers and students and between students and students. Two long-term class size reduction sites in North Carolina…

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…

The purpose of this paper was to share findings from an earlier study and to provide a framework for administrators to use in the implementation of class-size reduction (CSR) in their buildings. The study examined actual and average class size (CS), pupil-teacher ratios (PTR), and their differences. A primary goal was to clarify the ramifications…

This paper seeks to answer the question, "What is the relationship between student achievement and four variables often cited as solutions?" The selected variables are: (1) per-pupil expenditure; (2) class size; (3) teacher advanced training; and (4) teacher experience. Because supporters promote initiatives focusing on these variables,…

As poverty, dysfunctional families, and special needs continue to affect students, educators seek improved ways to start children in formal education. One such approach is to lower the teacher-to-pupil ratios, and recent research shows that this method positively influences pupil achievement. How the process works is not well understood. To fill…

A survey with open-ended questions investigated the attitudes of 54 urban Chinese teachers about issues related to the functions and benefits of having small classes (for both teachers and students). Findings indicated that most of the urban Chinese teachers preferred teaching small classes. While they perceived small class size as a beneficial…

This manual draws together evolving information about how group size influences what the group does and how learning tasks may be designed and employed to accomplish desired outcomes. The manual includes ideas from research on class size and its outcomes; theories of learning and development; and validated experiences of expert educators. It…

This report describes a study designed to discover the nature of teacher-student interactions in regular-size classes with 25 or more students and small-size classes with fewer than 18 students. Eleven public-school primary classrooms were observed, and the interactions between the teachers and students were studied. Verbal and nonverbal…

Given the failure of previous research to find consistent effects of class size on students' achievement, this study examined whether teachers in British elementary schools changed their behavior in ways conducive to learning when they worked with classes significantly smaller than average. Seven pairs of elementary school teachers judged as…

A class size reduction (CSR) program was implemented in a large low-performing urban elementary school district. The CSR program helps schools improve student learning by hiring additional teachers so that children in the early elementary grades can attend smaller classes. This study used a participant-oriented evaluation model to examine the…

The use of recent college graduates as volunteer teachers has increased in recent years with the growth of the Teach for America program and alternative middle schools for at-risk children from low income homes. Very few studies to date have investigated the effects of the use of such teachers on student learning and engagement in school. The…

A review of the literature on compensatory education programs was conducted to determine the effects of their following design features: (1) instructional setting; (2) class size; (3) ability grouping; and (4) various types of instructors. Remedial instruction in reading, language arts, and mathematics for elementary school students was…