The increase of socioeconomic gaps over tracked secondary schooling was markedly less dramatic than one might have expected based on the social reproduction argument …

„The increase of socioeconomic gaps over tracked secondary schooling was markedly less dramatic than one might have expected based on the social reproduction argument prevailing in stratification literature. […] Schooling (even tracked schooling) acts toward compensating overall levels of inequality. […] Our findings invite more critical reflection on the dominant view of schooling as a locus of reproduction, that is, an institution that exacerbates inequality in educational outcomes by social background.“
Univ.-Prof. Dr. Jan Skopek, Socioeconomic Inequality in Children’s Achievement from Infancy to Adolescence. The Case of Germany (2020), S. 21f.