This study evaluated the effectiveness of a brief, stand-alone bystander bullying psychoeducation program for middle school students. The purpose of the program was to train students to take action as peer advocates. Pre- and post-tests indicated that after completing the 90-minute psychoeducation program, students reported an increase in their ability to identify what different types of bullying look like, knowledge of bystander intervention strategies, and general confidence intervening as peer advocates. Implications for school counselors are discussed, including (1) taking a leadership role in program implementation, (2) having access to a brief, cost-effective bystander training intervention, and (3) applying the ASCA model to a bullying intervention. Directions for further research are discussed.