Based on a qualitative meta-analysis of data from five studies conducted with secondary and college students, this book explores the multiple ways in which sources of cosmopolitan agency exist in their lives. Grounded in a framework of critical cosmopolitanism, this book examines how students' identities develop in new contexts and how their perceptions of themselves change. With a focus on native-born, international, immigrant, and refugee students, Oikonomidoy discusses the ways in which students express their cosmopolitan orientations and interact in cross-cultural settings, and offers insights for scholars and teacher educators.