The sixth annual study of the economic performance of 15,055 graduates in 1979 of 14 vocational programs in Ohio used federal income tax records. Twelve of the programs with 13,109 graduates were secondary vocational programs. A total of 1,946 students graduated from 2 associate programs. The income of completers of vocational programs was compared to income of equivalent groups in the general population. The study also investigated the geographic mobility of vocational graduates since 1979. Results indicated predominantly higher incomes of vocational graduates than others in the general population. The result varied by vocational program, but the ratios were higher than 1 for the 1979 graduates in all programs for all years of the study (1983-1988). In all 12 secondary programs, the ratios were higher in 1988 than in 1983. For the 1979 graduates of the two associate programs, the ratios in 1988 were higher than the 1987, 1986, 1985, 1984, and 1983 ratios. Findings showed a continuing margin between incomes of vocational graduates and the equivalent group in the general population. (An executive summary and 64 tables and diagrams are included.) (YLB)