As part of the third follow-up to the National Longitudinal Study of the High School Class of 1972, the Third Follow-Up Questionnaire was administered to a sample of the members of the high school class of 1972 who had been surveyed in 1972 and 1974. This file contains the responses to that questionnaire. The questionnaire has 158 items about work and educational experiences and is divided into the following sections: (1) general information; (2) work experience; (3) education and training; (4) military service; (5) family status; (6) experiences and opinions; and (7) background information. The experiences and opinions section elicits attitudes of these high school graduates about: self and community; social, economic, and political opinions; aspirations; and education received. TYPE OF SURVEY: National Survey; Longitudinal Survey; Follow-up Survey. POPULATION: High School Graduates 1972. FREQUENCY: Once. YEAR OF EARLIEST DATA: 1976. (SLD)