This study investigated the effects of a co-educational, theatrical, peer-facilitated sexual assault prevention program at a large midwestern university. Additionally, the study compared results based on two different measurement tools (the Rape Myth Acceptance Scale (RMAS) and the Sexual Beliefs Scale (SBS)). Methods: Pre-test post-test experimental design was used. Results: Pre- and post- intervention scores were not significantly different on the RMAS, while there were significant differences on three of the five SBS subscales. Participants were less likely to believe women enjoy force and women engage in token refusals to sex after the intervention. However, participants were slightly but significantly less likely to agree "no means stop" post-intervention. Males were more likely than females to endorse rape-supportive values as measured by the RMAS and four of the SBS subscales. Conclusions: The results of this study highlight the need for sexual assault prevention programming that accurately reflects the ambiguity of sexual situations while reinforcing that sexual assault is unequivocally wrong. (Contains 1 table.)