This program is an evidence-based intervention for aggressive behaviour in pre-adolescent children. This program teaches positive strategies for coping with perceived conflict or threat, as well as an understanding of the participant's feelings and motivations behind inappropriate behaviour. This facilitator guide includes step-by-step instructions for accurately implementing this evidence-based program in the parent's group. There is also a corresponding workbook for parents which includes worksheets and monitoring forms to track progress and reinforce the skills learned in the group sessions.