Men and boys are commonly viewed as perpetrators and/or facilitators of relational violence, but this biological essentializing oversimplifies “masculinity” as “bad.” Connell illustrated the complex roles of bodies, structural order maintenance, and “pupils as agents, school as setting” (Connell 2000: 161) in shaping masculinity processes. Our study examined these factors by examining how peer perceptions of gendered identity threats relate to beliefs negatively affecting power relations. Students (N = 87; n = 36 males, 51 females) from four classes at two high schools in Connecticut provided pre- and post-test data for a Sexual Violence Prevention Program. Results show unhealthy attitudes related to peer perceptions as a basis for violence scenarios. We discuss primary-prevention curricular implications by addressing masculinities as social relationships involved in adolescents facilitating healthy relational practices.