Migration-based language pluralism and globalized identity conflicts pose challenges for educational research and linguistic anthropology, in particular, how we think about education and social inequality. This article proposes new conceptual tools, drawn from linguistic anthropology as well as world systems theory, for analyzing the role of schooling in social reproduction and for investigating the dynamics of globalized social polarization. It grounds the argument in an ethnographic study of Latino migrant schoolchildren in upstate New York. [scale, migration, globalization, social reproduction, linguistic anthropology] We live in a globalized world, one characterized by extreme economic inequality and mass migration. Together these features pose significant challenges for many parts of society and for our traditions of inquiry. Migrants seek better lives but encounter new forms of social and economic discrimination, and host societies rely on migrant labor but are increasingly troubled by migrant difference. The Anthropology of Education traditionally investigates the role of social, cultural, and linguistic difference in schooling, but now such differences and the institutional responses they engender are influenced by economic inequalities having national and international dimensions. The Linguistic Anthropology of Education, which rightly prides itself on its sophistication about context in language and learning, must now grapple with globalized processes that result in new forms of linguistic inequality and social polarization.This article explores these issues through a theoretical argument in section two, which frames the analysis of an ethnographic case in section three. The theoretical argument presents three interconnected positions. First, the tradition of social reproduction analysis remains relevant for an anthropology of education because we live in an era of widening, not lessening, economic inequality; but older frameworks must be rethought because they were formulated in and for a period prior to the profound social, cultural, and economic changes we associate with "globalization." Second, we need tools for understanding and investigating how new social divisions and polarizations-that combine ethnolinguistic and ethnoracial differences with social-class divisions and conflicts-play themselves out in schools and the wider society. Third, linguistic anthropology, with its understanding of the situated nature of all meaning-making and its sophisticated study of ideology, offers valuable resources for such inquiry; but it requires as well attention to scale, and in particular, concepts of sociolinguistic scale that encompass global system dynamics as well as operations of power.As anthropologists and language analysts we are interested in how people experience global processes like migration and new forms of cultural and linguistic diversity and how that experience is given shape and meaning by the way they use language and the way language is used with them. Accordingly, our primary empirical...