Introduction. Peer relationships play a significant role in the development of children and adolescents, as evidenced by the negative effects of their irregularities. The school class is an important setting for shaping these relationships. Aim. The main purpose of this article is to describe the activities of class teacher aimed at supporting the process of shaping proper relationships between their students. Materials and methods. This article is based on a subject literature review. Results. Research results presented in the relevant literature indicate that factors motivating school students to start interacting with their peers, and factors facilitating the maintaining of an interaction, are important for peer relationships. Knowledge about these factors and their interdependencies was used in the article to indicate the directions and the goals of activity for a teacher and the ways of achieving them. Conclusions. There is a need for a systemic approach to the process of shaping peer relationships and, at the same time, systemic activities of a teacher aimed at supporting this process.