This book, by an international group of scholars, focuses on a number of sociolinguistic issues, some of them complex and controversial, linked to language education in the age of globalisation. It examines these in different contexts of immigration and super-diversity, in the light of new mobilities and new conceptualisations of changing social realities and language communities. The various investigations presented in the volume are often united and interconnected in their approaches to these key areas of focus, although each peer-edited chapter brings its own relevance to the work as a whole, and each reflects the complexities and practices of the particular contexts and speech communities examined.The insights presented provide a useful way of looking at the current state of the art of language education across the different levels of schooling and also within the various contexts analysed. Because of the increasing interest in language education as a result of both the growing number of migrant children in schools and the globalisation associated with the rapid spread of English, the volume will be of interest to a wide international readership, including scholars and students of sociolinguistics and language education.