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…

This report is designed to help Pennsylvania policymakers compare two current school reform ideas that are intended to improve student achievement: private school vouchers and class size reduction. It begins with a brief history of educational vouchers, then reviews the achievement effects of the Milwaukee, Wisconsin, and Cleveland, Ohio,…