The impact of a college human sexuality course upon sexual attitudes and behavior was examined. A questionnaire, designed by the authors, was administered to students of a human sexuality course and a social psychology course at the beginning and end of the spring semester, 1975. On six of the seven attitudinal categories measured, students from the sexuality class evidenced significantly greater attitude change than those from the social psychology class in the direction of greater acceptance of sexuality and sexual egalitarianism. A male-female comparison regarding attitude change revealed no significant differences. The only behavioral change found in either class was a significant increase in masturbation among females in the sexuality course. This study indicated that sex education can have a significant impact upon sexual attitudes without significantly affecting most sexual behaviors. (Author)