Do children learn more in full-day kindergartens than half-day programs? If full-day kindergarten increases learning, are kindergartners in some schools particularly advantaged by their full-day experience? We address these questions with a nationally representative sample of over 8,000 kindergartners and 500 U.S. public schools that participated…

It has been acknowledged that children from poverty begin school missing many of the prerequisites for school success. The 1963 US initiative, Head Start, is the major federal program aimed at providing children in poverty the experiences necessary to start school on an equal footing with their same-age peers. This article uses data from the Early…