Although sex roles seem to be undergoing substantial changes in today's society, the work and family roles of women remain quite different from those of men. Data from the Monitoring the Future project, a 2-year project focusing on high school seniors' sex role attitudes and the relationship of those attitudes to various plans for adult roles, confirmed that high school seniors were generally committed to the principle of equal opportunity but not to any principle of identical family roles. The overwhelming majority preferred the traditional role distinction in their own future marriages. Larger proportions of females favored complete equality in vocational and educational opportunities, while more males favored traditional sex roles; however, there were more similarities than differences between male and female responses. There were also few differences between the educational plans of male and female students; females seemed to take work as seriously as did males. Numerous data tables are provided to illustrate the research findings as well as a summary data chart that appears in the beginning of the document to aid the reader in finding particular tables of interest. (JAC)