This is a secondary data analysis of data from a cluster randomized trial. The curriculum was grounded in social science theory and included 12 modules that were delivered in weekly 2-hour sessions for 6 weeks among grade 6 students in South Africa. Each of the 5 follow-up assessment periods, ranging from 3 months to 54 months postintervention, showed a significant reduction in the likelihood of perpetrating forced sex for youths who attended intervention sites vs control sites. This study is particularly important because HIV prevention and healthy sexuality programs frequently include content that addresses healthy relationships and also dating violence. It also speaks to the importance of conducting secondary analyses to explore unanticipated outcomes that HIV prevention and healthy sexuality programs may be affecting.