Discusses distinctions between the formal, overt curriculum and the hidden or implicit curriculum that inculcates values and expectations not openly acknowledged. Before 1900, schools stressed homogeneity, efficiency, and obedience to ensure students' smooth transition from childhood to life in an industrialized society. These values became hidden…

This article describes the Walden Toddler Program, a comprehensive early intervention model designed to be used for toddlers with autism in the natural environments of a child care center and children's homes. It reviews the program's philosophical foundations and describes key components of the model's incidental teaching. (Author/CR)