The present study aims to gather evidence on bullying prevention and reduction in schools due to implementing a specific strategy, called the Zero Violence Brave Club. This strategy is based on a successful educational action called Dialogic Model of Violence Prevention which was evaluated as a part of the project INCLUD-ED. Strategies for inclusion and social cohesion in Europe from education, funded by the 6th Framework Program of the European Commission. The Zero Violence Brave Club program is one such example. It is based on how students take a stance against violence and report it whenever it occurs, while they place value on friendship. In this club, students learn to defend and support victims and to isolate students who behave violently. The Zero Violence Brave Club program opens up a space for dialogic leadership. Students share daily situations and conflicts about feelings and values, where the ethos shows a precise positioning for eradicating violence. The program was developed in 2014 in different schools. It is grounded on the theory of the preventive socialization of gender violence created by Jesús Gómez and led internationally by CREA (Community of Research on Excellence for All). The Zero Violence Brave Club in schools is operationalized as groups of children with non-violent values. They support any child in their class or school who wants to avoid the aggressions they receive from other children in the school, acting as a pacific shield against the aggressors. Focusing on the Zero Violence Brave Club program, this investigation contributes to building new knowledge on bullying prevention or anti-bullying programs because it provides novel elements concerning preventive efforts against peer-to-peer violence. The objective of this study was threefold: 1) to collect qualitative evidence of improvement in coexistence and bullying prevention and reduction as a result of the implementation of the Zero Violence Brave Club; 2) to analyze the components of the Zero Violence Brave Club that contribute to bullying prevention and reduction; and 3) to analyze the impact of the Zero Violence Brave Club on children's mental health and psychological well-being. This study is developed following the Communicative Methodology of Research. Researchers interviewed teachers leading the implementations of the Zero Violence Brace Club in the schools under investigation.