Focusing on graduates of cooperative vocational programs at the high school level, a study described and analyzed the in-school and post-high school labor market experiences of 427 students enrolled in four different programs during their junior and senior years: cooperative vocational, regular vocational, work study, and general academic. The (male) students, who attended eighteen high schools in nine Massachusetts cities and towns, were interviewed first while seniors and then after graduation (in spring 1972) in three followup interviews over an eighteen-month period. Interviews with students prior to graduation elicited information concerning employment experiences during high school (labor force participation, weeks of employment, unemployment experiences, occupations and industries of jobs held, wages, and on-the-job training) and post-high school plans. In subsequent interviews students were questioned as to their first post-high school job, labor force participation, employment experience, unemployment experiences, and wages. In general, the successes of graduates from cooperative vocational programs were not significantly greater than those of graduates from other programs. Irrespective of the high school program, the amount of work experience during the high school years was a significant factor leading to success in the transition from school to the labor market. (YLB)