The article deals with the domestic experience of working with migrant children; the didactic conditions of adaptation of these children are described in the article. The authors propose the idea of implementation of the complex of pedagogical conditions for successful sociocultural adaptation of migrant children in the polycultural environment of the basic secondary school. The concepts of “adaptation”, “sociocultural adaptation” and “pedagogical conditions” are under consideration; the features of migrant children are found out and described.