Data on the black subsample of Ohio State University's 1981 Longitudinal Surveys Youth Cohort were analyzed to investigate the relationship between attendance at segregated or desegregated high schools and the racial composition of one's subsequent occupational work group. The analysis indicated that: (1) controlling for the effects of other variables, blacks who had attended segregated schools were likely to be in predominantly black occupational work groups, while those who had attended desegregated schools were likely to be in desegregated work settings; (2) the association between school racial composition and racial composition of work group was particularly pronounced in the North; (3) black workers were more likely to be concentrated in low status occupations and in the public sector; and (3) blacks from desegregated schools made fewer racial distinctions about the friendliness of their co-workers and the competence of their supervisors, while those from predominantly black schools tended to perceive desegregated co-worker groups as less friendly and see white supervisors as less competent than black supervisors. It was suggested that social psychological processes have significant effects on minority segregation in institutional settings. (MJL)