This report discusses research related to the educational potential of 3-2-1 CONTACT, a PBS (Public Broadcasting Service) series on science and technology, which was produced by the Children's Television Workshop for a primary target audience of 8- to 12-year-olds in both home and school settings. Conducted over a 6-year period (1977-83), this research encompasses a number of different types of studies and data ranging in purpose and methodology. A discussion of the evaluation context introduces the review of the research, which is presented under the following topics or subtopics: (1) Formative Research for Seasons I & II; (2) Nielsen Ratings for Seasons I & II; (3) Other Indicators of Effectiveness (teacher's guide requests, PBS station response, reaction from the science community, collaboration with service groups, etc.); (4) Ann Arbor Study of Season I; (5) The Eriksson Study of Season II; and (6) The Oakland Study of Season II. Each section includes a discussion of the research methodology and findings. Some summaries of results indicate special areas of concern, such as image of scientists, science knowledge, appeal of program materials, sex differences, and science attitude formation. A final summary/discussion and a list of references complete the document. (JB)