This volume, the fourth in a six-volume review of educational policy and planning in Canadian education, deals with Ontario. Sections of this volume consider the historical overview of education in Ontario; elementary and secondary education, including goals and objectives of elementary and secondary education, system structure, research and development, support functions, and delivery functions; and postsecondary education, including colleges of applied arts and technology and other vocational education, universities and related institutions, finance, the government position in formal postsecondary education, formal adult skill training, nonformal learning and cultural enrichment, and major issues and trends in postsecondary education. (Author/IRT)