This report examines the effects of preschool or childcare exposure on cognitive and social development before kindergarten, focusing on intensity and duration of attendance, and how this varies across different income and ethnic groups. The authors utilize data from a nationally representative sample of young children with rich family background information. Findings are important for debates over extending free preschool and which groups of children would most benefit.

Senior slump is a phenomenon unique to American high schools, where students view senior year as a time for nonacademic pursuits. This report suggests curtailing senior slump to add valuable months to students' education at a critical point in their intellectual development. Policy directives are presented to help American high schools reclaim the senior year.