This study examines alumni's perceptions of differential treatment on the basis of race/ethnicity by faculty, students, and staff/administrators in five behavioral science disciplines at eight independent California State University campuses. Reports of personal experiences by 2,078 alumni in four ethnic groups (Asians, Blacks, Hispanics, and Whites) are compared and examined for patterns of changed opinions over time. Both positive and negative differential treatment and the effects of proportional minority enrollment are considered. The effects of perceived racism on alumni reports of their intellectual and personal development and the qualities of their programs are analyzed. The majority of respondents in each ethnic group indicated that their ethnicity/race did not affect their treatment. There was a tendency for respondents to report more positive than negative treatment. At least one source of unfavorable treatment was indicated by 31% of Black alumni, 16% of Hispanic alumni, 9% of Asian alumni, and 3% of White alumni. (17 references) (JDD)