The article presents a curriculum-sociological study of "religion" in the classroom. More specifically, it is a study, inspired by Bernstein, Foucault and Bourdieu, that examines various forms of identity politics tied to "religion" and "culture" as these concepts unfold in the classroom in relation to knowledge production and social classification. Categories such as "Muslim" and "Danish" are tentatively broken down in a study of the classroom as a locus for knowledge production and the production of social difference. What knowledge of religion is produced? What spaces for subjects? What ways to be a pupil? And in what ways do "Muslim-ness" and "Danishness"/"Christian-ness" figure in the social economy of the class? The classroom is studied as a micro-political arena for relations and politics concerning minorities and majority. In this sense, "religion"/'culture" may be seen partly as knowledge clusters and partly as subject-producing technologies colouring and shaping bodies. These knowledge clusters, in turn, are coloured by the social economy associated with the agents' bodies, making it a productive and potent part of social classification. Categories such as "Muslim" and "Danish"/"Christian" are in themselves to be understood as processes of social classification and distribution. Hence, "religion" may be understood as a class-producing practice as the latter is transformed and produced in the pedagogical field of practice. (Contains 1 note.)