IRCT2016062228583N1 IRCT 2017-08-28 khjedehi Clinical trial of comparison of the impact of performing and not performing educational intervention on tendency to drug abuse among students Investigation the impact of educational interventions on reducing tendency towards addictive drug abuse in students based on the model of positive youth development 2016-03-19 anticipated 200 Complete https://irct.ir/trial/23163 interventional Randomization: Randomized, Blinding: Not blinded, Placebo: Not used, Assignment: Parallel, Purpose: Prevention, Other design features: The selection of areas, schools, and classes was done using random numbers. 1-2 addiction. Intervention 1: Intervention group 1: intervention was done in the two fields of students and parents. Students’ program was a nine-session half-hour program specific for youth positive growth including: introduction and overview of program, training self-awareness and managing anger, effective communication, brave behavior, increasing self-efficacy, coping with stress, problem solving and decision making which were done by group discussion, role playing and case study, the speech and questioning and answering. Another issues included in the program were team-making and holding exhibition, spirituality and importance of meaning in life, and encouraging teens to make a clear commitment in the presence of peers to not use drugs. Training parents was a half-hour three-session training program including the increase of children’s self-efficacy, parenting skills and making relation with children through brainstorming, lecturing, discussing and case study. Intervention 2: Control group: providing educational package after doing the post-test.