Students enrolled in Psychology of Prejudice and Introductory Psychology courses completed measures of racism, sexism, and attitudes toward homosexuals at the beginning and end of the term. We predicted that those who took part in the Psychology of Prejudice class would have significantly reduced prejudice as a result of the course experience. We also predicted that the Introductory Psychology students would show a minimal decrease in prejudice. As predicted, students in the prejudice class showed significant decreases in prejudice, while the introductory psychology students did not. Course involvement was related to greater prejudice reduction in two prejudice areas, but course grade was not related to prejudice reduction. We discuss the implications for prejudice reduction through class activities and education. (Contains 1 figure, 1 table, and 2 notes.)