Using a 5-year longitudinal study, we investigated the long-term effects of courses with ethnic studies content and courses with Latino or Black professors on university students' intergroup attitudes. We found that these curricular variables significantly affected the intergroup attitudes of students beyond pre-existing differences in attitudes and beyond other curriculum variables. As expected, we found differences between ethnic groups: White students showed movement toward other groups as a result of these curricular factors, whereas Latino and African American students showed both increased tolerance toward other groups and movement toward the in-group. The results are discussed in terms of group status differences between the dominant White majority and the stigmatized Latino and Black minority groups.