In the current registration, we specify the analysis plan for our multi-method RCT effectiveness evaluation of the Make a Move+ (MaM+) program. The main goals of MaM+ are: 1. To prevent experiences with sexual and dating violence (SDV) perpetration and SDV victimization; 2. To increase safe sexual behavior (e.g., use of contraceptives). MaM+ also focuses on the following sub-goals: 1. improving male youth’s attitudes (e.g., towards 1) girls and women (i.e., adversarial sexual beliefs) and 2) communication with a sexual partner, 3) attitudes towards male dating violence, 4) attitudes towards acceptable and positive sexual behavior, and 5) heterosexual double standards; 2. increasing male youth’s global self-esteem; 3. increasing male youth’s sexual knowledge; 4. improving male youth’s sexual and romantic interaction competency and peer pressure resilience skills. 5. Subgoal for parents: increasing parents’ knowledge on how to support their son in the romantic and sexual aspects of their lives. ...