This project is a follow-up to the Study of Early Child Care and Youth Development. We will examine out-of-school time in relation to cognitive, social, and behavioral outcomes at high school graduation. The study provides a unique opportunity to examine connections between out-of-school experiences during three developmental periods (elementary school, middle school, high school) and longitudinal impacts of these experiences on critical developmental outcomes measured at the end of high school. Specific aims include examination of how early out-of-school experiences relate to choices adolescents make in high school and beyond, and when and under what conditions out-of-school experiences matter for adolescents.