Human immunodeficiency virus (HIV) and acquired immunodeficiency syndrome (AIDS) have become a serious health threat to university students. This study evaluated a peer-led intervention program with university students to increase knowledge and attitudes of HIV/AIDS infection and transmission. Subjects were students (n=41) from an undergraduate psychology class (21 females and 20 males). For the intervention, two Peer Health Facilitators presented HIV/AIDS related information, led interactive activities, modeled ways to use condoms safely, and answered questions. A pretest/posttest questionnaire was administered immediately preceding and following the presentation to assess differential changes in HIV/AIDS related attitudes and knowledge. The results showed significant improvement from pretest to posttest. Appendices are: (1) "HIV/AIDS Flip Chart Outline"; (2) "STD Shuffle" (directions for conducting a classroom exercise); and (3) "Knowledge/Attitudes About HIV/AIDS Pre-Test Post-Test." Contains 22 references. (Author/RB)