Safe School Ambassadors (SSA) is a student-centered bystander education program developed by Community Matters to reduce bullying/mistreatment and enhance school climate. This report details a two-part program evaluation that was designed to assess the efficacy of the program’s logic model and its impact on school-level discipline indicators. Their data suggest that implementation of the SSA program, when compared to non-SSA schools, leads to statistically significant reductions in suspensions and other discipline indicators over time.