Aim. Peer mediation is a tool for the prevention of socio-pathological phenomena occurring in the school environment, is an opportunity to resolve conflicts through reconciliation. The paper focuses on the perception of the importance of peer mediation and on the presentation of the results of a questionnaire survey, the aim of which was to determine the respondents’ preferences after completion of the project process. Methods. The aim of the questionnaire survey was to determine how pupils and students perceive peer mediation. The survey sample consisted of selected pupils from 6 primary schools aged 10 to 15 years and students from 6 secondary schools aged 15 to 18 years. The questionnaire was completed at the beginning (year 2020 - N = ...