ProTech is the Boston Public Schools' longest-standing and most developed school-to-career (STC) initiative. It is a collaboration of the Boston Public Schools, 75 employers, and the Boston Private Industry Council. ProTech combines rigorous academic instruction, a sequence of worksite learning experiences in seven major industrial clusters for juniors and seniors, and additional supports after high school. The post-high school outcomes of 1993, 1994, and 1995 high school graduates who had participated in ProTech were compared to those of graduates who had not participated in ProTech. Responses were received from 107 (65.6%) of the 163 former ProTech participants who were sent surveys, as well as from 124 (26.9%) of the 460 graduates who had been eligible for ProTech but not participated in the program. The ProTech participants, particularly the African-American ones, were more likely to attend college than nonparticipants were (78% versus 72%). ProTech participation was also associated with a higher likelihood of having remained in college and having earned a college degree or other certification of postsecondary training, being employed at the time of the survey (87% versus 75%), and receiving higher earnings. ProTech graduates attributed their success to the STC program, in particular to the adults they had encountered while in it. (MN)