Are High-Quality Schools Enough to Increase Achievement Among the Poor? Evidence from the Harlem Children's Zone July 01, 2011 By Will Dobbie and Roland G. Fryer, Jr. This study examines the causal impact of Harlem Children's Zone charters on educational outcomes. See more Academic Research Paper Explore Topics: Cradle-to-career Place-based Partnerships Data, Metrics & Impact Education & Child Development Equity Integrated Supports Personalization Policy & Advocacy Success Planning