ABSTRACT The growth of migration brings new challenges to contemporary societies, especially regarding the inclusion of migrant students in the education system of the host countries. Peer mediation strategies are effective in promoting the inclusion of children with special educational needs in mainstream classrooms, but evidence about its effects on migrant students is scarce. The aim of this study was to explore teaching practices which promote the inclusion of migrant students through peer mediation. A case study was designed which involved 17 native and non-native fifth-grade students and 4 teachers. Observations and interviews were used to comprehend classroom dynamics focusing on migrant-native interactions. Teachers hold different beliefs regarding the role of peer mediation strategies as a tool to foster inclusion in the classroom. Practices, in which the teachers had the explicit aim of creating a pedagogical supportive interaction between native and migrant students, were observed, peer-mentoring schemes being the most common. It was also observed that classroom organisation, task organisation and task structure have elicited informal supportive interactions between migrant and native peers. These results suggest that peer mediation strategies may be an important resource to promote the inclusion of migrant students.