The Tennessee legislature sponsored a study on the effects of class size (Project STAR). The design and measurement techniques of this study are discussed. The establishment of the basic elements of the design is examined, followed by the recruitment of schools and school systems to participate in the study. The process of setting up smaller…

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…