 Sexual violence SV and adolescent relationship abuse ARA are prevalent among adolescents and associated with poor health. Global health organizations highlight engaging men and boys in preventing violence against women as a potentially impactful public health strategy. This study aims to test, via a two arm cluster randomized controlled trial, a gender transformative SVARA perpetration prevention program among African American adolescent males ages 13-19 target is high school age implemented in a community-based setting. Gender transformative refers to a theory- and evidence-based approach to alter gender norms that foster SVARA while promoting bystander intervention i.e., giving boys skills to interrupt abusive behaviors they witness among peers to reduce SVARA perpetration. As the acceptance of SV and involvement in unhealthy sexual behaviors are associated with SVARA perpetration, this program integrates analysis of social norms that condone violence against women, sexual health promotion, and skills in bystander intervention -- an approach that has been implemented in multiple non-U.S. settings among young adult males with reductions in violence, development of more equitable gender attitudes, and less risky sexual behaviors. This will be the first test of such a gender transformative program among adolescent males in the U.S. Via a 2-arm cluster-randomized trial in youth-serving agencies 16 clusters, N840 adolescent males ages 14-19, this study will assess the effectiveness of Manhood 2.0 proposed name for this gender transformative program compared to a job skills curriculum. Three months after the end of the program Time 2, compared to controls, youth will demonstrate increased positive bystander intervention behaviors secondary outcome. Intermediate outcomes are: condom use self-efficacy; contraception use attitudes; recognition of abusive behaviors; gender-equitable attitudes; and intentions to intervene with peers. Nine months after intervention completion Time 3, youth will report less perpetration of SV and ARA toward females Primary Outcome compared to controls. This study will provide urgently needed information about the effectiveness of a gender transformative program that combines healthy sexuality skills, gender norms change, and bystander skills to interrupt peers disrespectful and harmful behaviors to reduce SVARA perpetration among adolescent males. 