The purpose of this study was to examine the effects of conflict resolution, peace education and peer mediation on the conflict resolution skills of students via meta-analysis method. 23 studies were determined to be in accordance with the study criteria. According to research findings conflict resolution, peace education and peer mediation education programs have a wide range of effect on the conflict resolution skills of students. In addition, the education program, education level, the type of application, publication type, the duration of application have been examined and evaluated. As a result, it can be stated that conflict resolution, peace education or peer mediation is effective in the constructive development of conflict resolution skills of the students.