Examines the effects of school types and ability grouping within school types on individual student performance. Results demonstrate that students in high ability groups gain more and students in low ability groups gain less over a five-year period than they would be expected had they not been separated into ability groups. (Author/PS)

A general equilibrium schooling model shows that greater school efficiency is complementary with more equal opportunity, increased overall learning, more integration, stable teacher salaries, and fewer course preparations per teacher. Transferring students to area schools with curricula suited to their abilities would secure these ends. (Contains…