The Ethnic Lens: Social Networks and the Salience of Ethnicity in the School Context

Research on ethnic segregation in schools regularly assumed that ethnic homophily—the tendency to befriend same-ethnic peers, above and beyond other mechanisms of tie formation—is associated with salient ethnic boundaries. We devise a more direct test of this assumption based on a novel measure of ethno-racial group perceptions. In a network study of more than 3000 students in 39 schools of a metropolitan region in Germany, we asked students to indicate which cliques they perceived in their school grade and to describe these groups in their own words. We find that ethno-racial labels are more likely directed at larger cliques that include a higher share of Muslim students or more students with stronger ethnic identification. Still, ethno-racial labels are rarely employed, both absolutely and relative to other modes of classification. Moreover, net ethnic segregation in friendships (“ethnic homophily”) and the reverse pattern in dislike relations (“ethnic heterophobia”) are not associated with a more frequent use of ethno-racial labels. Our results have substantive and methodological implications for the study of social networks and diversity in educational settings.