On the basis of the comparability of the migratory contexts in Switzerland and Canada, this article tries to analyze the issue of multicultural education in the training of teachers. The differences noted in the designs of the migratory policies are clearly reflected in the place granted to multicultural education in the teachers training. A greater institutional and teaching legitimacy of cultural diversity was noted in Canada compared to Switzerland. It is legitimate to wonder if countries which are not considered as countries of immigration are able to train their teachers to manage of the cultural diversity of classrooms.