The labor market outcomes of non-college-bound high school graduates were examined by analyzing the 1980 High School and Beyond Fourth Follow-up Survey, which contains information on more than 14,000 former high school students who were interviewed in 1980 as sophomores and again in 1982, 1984, 1986, and 1992. The study concentrated on respondents who had not pursued more than 5 months of postsecondary education after graduation. The analysis generally confirmed the previously discovered modest association between high school coursework and females' short-term labor market outcomes. Grades in high school were also modestly associated with early labor market outcomes for males and females; however, these associations had disappeared by 1991. Taking vocational courses was either associated with poorer earnings or not significantly associated with economic outcomes in 1983 and 1991. The one exception was credits earned in specific labor market preparation courses, which were associated with higher earnings and weeks employed for females in 1983. Working while in high school proved beneficial to new graduates and was positively associated with both early and later labor market success for female graduates. The following items are appended: regression equation results; issues with the Fourth Follow-up data; the classification scheme for non-college-bound students; a glossary; and technical notes. (Contains 17 tables/figures.) (MN)