Innovative programs of school reform and research for diverse student populations have tended to focus on specific cultural, linguistic, or ethnic populations and on specific local communities. Findings from this body of research over the years have resulted in a core of principles for designing and implementing programs for at-risk students. Five…

This digest discusses the findings of empirical studies on teacher-directed and child-initiated preschool programs. Three long-term preschool curriculum comparison studies--the High/Scope Preschool Curriculum Comparison, the Louisville Head Start Study, and the University of Illinois Study--were started in the 1970s. These studies indicated that…