Tasks related to the inclusion of migrant children pose significant challenges for teachers. Our study's focus is on the research question, what factors play a role in the successful integration process of migrant children? We aim to present integration challenges, statistical data related to the topic, and provide a comprehensive overview of the factors that help students' school integration. We can state that diversity promotes synergy in the community and positively impacts effectiveness. At the same time, the school is less effective in solving social problems. Problem management adjusted to the school's operation can also contribute to the reorganization of pedagogical practice and, in the long run, to social effectiveness. We consider a new type of service system for school social work to complement the pedagogical process. In our opinion, the content elements of training should be extended to describe the helping methods in the inclusion of migrant children.