Used hierarchical linear modeling to explore the effects of the social context of Chapter 1 prekindergarten classrooms on 4-year-olds' learning. Found that children made smaller gains on the Preschool Inventory over the preschool year in classrooms with higher concentrations of minorities, children with special needs, recent immigrants, and…

The delivery to impoverished mothers of medical and social services, including day care for their children, had effects that were evident 10 years later. These effects included higher socioeconomic status and educational attainment and smaller families for the mothers, and better school attendance and fewer academic problems for their children.…