Across the massive megalopolis stretching from the northern suburbs of Los Angeles County through the metropolitan complex along the northern border of Baja California is a diverse area containing 24 million people, with a disproportionate percentage of Latinos and African Americans who are facing an educational and economic disaster. As it…

Attendance in preschool centers can yield short-term benefits for children from poor or middle-class families. Yet debate persists in Europe and the United States over whether centers yield gains of sufficient magnitude to sustain children's cognitive or social advantages as they move through primary school. We report on child care and home…