Background Worldwide, few countries have higher rates of sexual and gender-based violence (SGBV) than South Africa [1]. From 2013 to 2014 alone, nearly 50,000 rape incidents were reported to the police in the country [2]. This predicament affects the young and the old: the majority of sexual violence survivors presenting at Thuthuzela Care Centers are less than 18 years of age (60%), and 40% of all rape survivors are pre-teens under the age of 12 [1]. Nonetheless, annual reporting rates of rape in the country are comparatively low, with only 1 in 9 rapes reported each year [3]. Furthermore, the issue of sexual violence in South Africa is compounded by the linkages between such violence and HIV seropositivity [4]. Given these realities, this study sought to assess the effects of an intervention geared toward positively influencing negative community norms related to SGBV.