This study explores the disparity in access to effective teachers in 29 school districts across the country, revealing that disadvantaged students receive poorer-quality instruction, on average, compared with other students. Mathematica conducted the studies for the Institute of Education Sciences.

This article examines the impact of participation in the National School Lunch Program (NSLP) on children's dietary intake at lunchtime and over 24 hours. Using a fixed effects model to control for selection bias, we find that NSLP participation leads to increased 24-hour intake of six vitamins...

Little national information is available to help policymakers understand the methods that states use to regulate residential facilities for children with mental illness. This article describes the results of a government-sponsored survey of state officials that examined how states license,...

The author responds to an article that proposes a mechanism to statistically test the difference in the relative contribution of the size of each parent to a child's birth weight and rate of weight gain during infancy—two factors associated with the development of obesity—urging...