Highly rated urban schools are often held up as models for lower-rated urban districts. These high-scoring urban schools, both district and charter, get results on Ohio's standardized tests that shine compared to results many schools get in districts struggling with the effects of concentrated poverty. Administrators, journalists, and policy…

This paper investigates the effects of California's billion-dollar class-size-reduction program on student achievement. It uses year-to-year differences in class size generated by variation in enrollment and the state's class-size-reduction program to identify both the direct effects of smaller classes and related changes in teacher quality.…