Science and Education Publishing American Journal of Sports Science and Medicine 2333-4606 2 6A 2014 12 25 The Development of a Sport-based Personal and Social Responsibility Intervention on Daily Violence in Schools 13 17 EN Bernardino JavierSánchez-Alcaraz Martínez Physical Education Department, IES Samaniego, Murcia, España Alberto Gómez-Mármol Alfonso Valero Valenzuela Ernesto De la Cruz Sánchez ArturoDíaz Suárez AJSSM201426A4 10.12691/ajssm-2-6A-4 2014 11 20 2014 12 15 2014 12 25 This research assess the improvements that the implementation of Personal and Social Responsibility Model produces on observed and suffered violence among teenagers. In order to this, a training course was taught to 9 teachers (5 from primary school and 4 from secondary school), who implementated the Responsibility Model during 24 Physical Education lessons. The participants, 215 students from primary education and 189 from secondary education, were divided on 9 control groups and 9 experimental groups. Postest results point that observed violence as well as suffered violence improved significantly on experimental groups, in contrast to control groups, where there were not significant differences in any of both variables. Therefore, Personal and Social Responsibility Model is an efficient teaching methodology to improve the quotidian scholar violence in Physical Education lessons.