Over the past 30 years, numerous policies have focused on closing the achievement gap in the United States. Despite this emphasis on mastery and proficiency, students continue to perform below expectations. We use standardized math test performance to explore whether schools have been able to eliminate the achievement gap across middle-level…

Two decades ago, the New Jersey Supreme Court in "Abbott v. Burke" mandated that the state establish high quality preschool education in the 31 highest-poverty school districts. New Jersey created a pre-K program with high standards and a continuous improvement system that transformed a patchwork of private and public programs into a…