Seven outcome measures were evaluated including bullying perpetration, peer victimization, physical fighting, homophobic name calling (victimization and perpetration), and sexual violence (victimization and perpetration). Given that students in the intervention received only one-year (15 lessons; 50 minutes/week) of the developmentally-sequenced three-year curriculum, it was hypothesized that the strongest intervention effect would be seen for overt physical aggression, followed by more subtle effects for bullying and peer victimization outcomes. Because students were not introduced to concepts of prejudice, bias, and sexual violence (referred to sexual harassment) until the 7th and 8th grade curriculum, it was hypothesized that no significant intervention effects would emerge for these constructs at this point in time.
