The purpose of this paper is to report the findings of the Early Childhood Training Program. This program was designed to increase the quality of care offered to children age 0 to 5 in a metropolitan area of Southern California. Participants were recruited from six center-based child care programs serving preschool-age children and included program administrators, teachers, teacher aides, and enrolled children. The six participating programs were assessed at four levels: program administration, classroom, teacher, and child. The results demonstrated that the largest effect sizes were seen at the program administration and classroom levels and that smaller effect sizes were found with regard to the teacher and child levels.