Most evaluations of education policies focus on their mean impacts; when distributional effects are investigated it is usually by comparing mean impacts across demographic subgroups. We argue that such estimates may overlook important treatment effect heterogeneity; in order to appreciate the full extent of a policy's distributional impacts one…

This Information Capsule examines the background and history in addition to research findings pertaining to class size reduction (CSR). This Capsule concludes that although educational researchers have not definitively agreed upon the effectiveness of CSR, given its almost universal public appeal, there is little doubt it is here to stay in some…

Public education in the United States struggles to prepare all students for success in post-secondary education and careers. One reason attributed to dropouts, student-disconnect, and low levels of achievement is that too many students attend large, impersonal schools where they are not engaged in learning. Many policy makers view the…

Evaluated Wisconsin's Student Achievement Guarantee in Education (SAGE) program of class-size reduction through a quasi-experimental, comparative-change design. Results for 1996-97 and 1997-98 are consistent with the positive effects shown for Tennessee's Student/Teacher Achievement Ratio program (STAR). (SLD)

Although class-size reductions cannot guarantee better student performance, the Tennessee and Wisconsin experiences, along with other studies, suggest that successful programs share key characteristics: concentration in the primary schooling years, classes with not more than 20 students, greater benefits for urban minority students, and alignment…

The Educational Priorities Panel carried out a study of the first year of the class size reduction program for grades K-3 in the New York City public schools by visiting five schools throughout the city and interviewing the principal and at least two teachers involved in implementing the program at each school. In all, 17 interviews were…