A high proportion of minority language students in a classroom is associated with more frequent minority language use among classmates …

„The findings provide tentative support for the proposition that a high proportion of minority language students in a classroom is associated with more frequent minority language use among classmates, which could affect language achievement through de-/increased exposure to that language.“
Julian Seuring u. a., Ethnic Classroom Composition and Minority Language Use among Classmates: Do Peers Matter for Students’ Language Achievement? In: European Sociological Review, 2020, Vol. 36, No. 6, S. 933.