Illustrating the perceived benefits of bystander programs, the 2013 Campus Sexual Violence Elimination (SaVE) Act requires post-secondary educational institutions participating in Title IX financial aid programs to provide incoming college students with primary prevention and awareness programs addressing sexual violence. The Campus SaVE Act mandates that these programs include a component on bystander intervention. This review will examine the effects of bystander programs on attitudes (i.e., perceptions of violence/victims, self-efficacy to intervene, intentions to intervene) and behaviors (i.e., actual intervention behavior, perpetration) regarding sexual assault among adolescents and college students. Findings from this systematic review will provide valuable evidence of the extent to which bystander programs, as mandated by the Campus SaVE Act, are effective in preventing sexual assault among college students. Additionally, by examining effects of these programs among adolescents, this review will provide educators and policy makers with information for determining whether such programs should be widely implemented in secondary schools.