This Phase II SBIR project is designed to address the critical public health problem of bullying and cyberbullying among middle school age youth. The project involves developing and testing bullying and cyberbullying prevention materials, including interactive classroom sessions and corresponding serious games, based on the evidence-based substance abuse prevention approach called Life Skills Training. The product has the potential to fill a gap in the intervention tools currently available to schools that can be widely disseminated throughout the country using existing marketing and dissemination channels and decrease the adverse consequences of bullying and cyberbullying as well as substance abuse.