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 to this, 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.