The final paper closely describes the theme of migrant children and their adaptation to the new environment. Children are able to acquire a foreign language quicker than adults, however, this can imply additional responsibilities within the family, especially in terms of translation between languages. The acquisition of the Croatian language and support within the educational system play a key role in providing equal opportunities and socialization for migrant children. Conducting workshops like imagined intergroup contact and cooperative learning enables children to establish communication more easily and to overcome the language barrier. In this regard, the timely preparation of school members and inter-institutional cooperation are needed. Social work professionals working with the migrant population are present in various fields of rights enhancement and also engage in raising awareness in wider communities. The development of cultural and language competence of social workers represents an important component in the professional development concerning social work with migrant children in multilingual and multicultural environments.