Inequality is bad per se and has adverse effects, among other things, on economic development and the environment. It is also often argued that high and increasing inequalities put societies under stress, which increases the likelihood of social conflicts. However, the literature on this topic...

In this article, we analyze whether non-native speakers in the classroom affect the educational achievement and social integration of migrant and native students. In contrast to previous studies, which mainly examine the effect of the share of immigrant pupils, we focus on language heterogeneity...