In order to appraise the usefulness of instructional television (ITV) as the core component in instructional systems designed to meet the special needs of the educationally disadvantaged children of migrant farm workers, American Indians, and the inner-city poor, a study was made of the use of ITV programs to meet similar needs in other countries. The four in-depth case studies which supported this appraisal are presented here: educational radio and television in Australia, ITV in Israel, the Nippon Hoso Kyokai (NHK) Gakuen (high school) program in Japan, and educational radio in New Zealand. These case studies provide detailed information on the functioning of each program which goes beyond appraising its potential for the educationally disadvantaged in the United States to a complete description of the program and its place in the educational system of the country as a whole. The programs used in Australia, New Zealand, and Japan rely on correspondence courses to supplement the instruction provided on television, while the Israel ITV system is integrated into the school curriculum throughout the country. (JY)