New York City's Pre-K for All (PKA) is the nation's largest universal early childhood initiative, serving over 64,000 four-year-olds annually. Stemming from the program's choice architecture as well as the city's stark residential segregation, PKA programs are extremely segregated by child race/ethnicity. Our current study explores the complex…

This study examines growth in language and math skills during the summer before kindergarten; considers variation by family income, race/ethnicity, and dual language learner status; and tests whether summer center-based care sustains preschool gains. Growth in skills slowed during summer for all children, but the patterns varied by domain and…

Using administrative and qualitative data, we investigate how decentralization affects the supply of optional educational services using the example of school-based prekindergarten (pre-K) in New Orleans during the transition to a majority-charter system. Although charter school leaders are motivated by student- and school-level benefits of pre-K,…

Replication studies are extremely rare in education. This randomized controlled trial (RCT) is a scale-up replication of Fuchs et al., which in a sample of 139 found a statistically significant positive impact for Number Rockets, a small-group intervention for at-risk first graders that focused on building understanding of number operations. The…

Using a cluster randomized trial design, we evaluated the persistence of effects of a research-based model for scaling up educational interventions. The model was implemented in 42 schools in two city districts serving low-resource communities, randomly assigned to three conditions. In pre-kindergarten, the two experimental interventions were…