This report is an overview of recent research on the effects of class size on the academic performance and behavior of students at risk. In several ways it is not a conventional literature review. It emphasizes one recent large-scale investigation, Tennessee's Project STAR (Student-Teacher-Achievement-Ratio), begun in 1985. It is more evaluative…

This report summarizes the findings of some recent pivotal studies of class size, especially as they relate to students at risk. Of particular note is a large-scale study of class size, which was designed to test the conclusions of G. Glass and M. Smith (1978) and G. Robinson (1990) about the advantages of small class size. This study, Project…