With few exceptions, empirical research investigating the possibility of heterogeneous benefits of class size reduction lacks a conceptual framework about specific dimensions of potential heterogeneity. In this paper we develop a model of education production that incorporates disruption and student achievement and illustrates how these underlying…

"Education Matters" is the monthly newsletter of the Association of American Educators (AAE), an organization dedicated to advancing the American teaching profession through personal growth, professional development, teacher advocacy and protection. This issue of the newsletter includes: (1) Whatever It Takes? (Maybe Not): 4 Reasons…

This study provides an overview of class size research, examples of various class size and pupil-teacher-ratio (PTR) configurations commonly used by practitioners, and the most recent findings of scientifically controlled experimental Tennessee STAR studies. The learning environment is hierarchical in nature, with student-level data influenced by…

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)

Tennessee's Project STAR (Student Teacher Achievement Ratio) randomly assigned 7,000 K-3 students to small classes (13-17 pupils), regular classes (22-26 pupils), and regular-with-aide classes. Small classes ameliorate large schools' effects, reduce grade retention and discipline problems, benefit minority students substantially, allow students…

Researchers have long investigated whether smaller classes improve student achievement. Their conclusions suggest that class size reduction (CSR) can result in greater in-depth coverage of subject matter by teachers, enhanced learning and stronger engagement by students, more personalized teacher-student relationships, and safer schools with fewer…

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…

Most education research has confirmed that small classes yield benefits. Research also has revealed nuances about how and when small classes will work best, where an investment will result in maximum return, and exactly how many students a "small" class should have. The details of these findings can help policymakers strike a practical…

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)

Tennessee's Project STAR (Student Teacher Achievement Ratio), a large longitudinal project involving students in kindergarten through third grade, has provided important information about class-size effects on pupil achievement and development. The project showed that small classes provided higher student outcomes and better student behaviors than…