A critical reality of contemporary education in a globalised world is the growing cultural, racial and linguistic diversity in schools and the issues involved in educating increasing numbers of students who are still learning the dominant language. This poses extraordinary challenges for second and foreign language teachers in many countries, where such students must engage with the mainstream curriculum in a new language. What do these increasingly plurilingual and multicultural classrooms look like? And how do language teachers address the challenges of such diverse classrooms? This book brings together a group of well-recognised language education scholars who present their research in a range of international settings. They focus on the key areas of pedagogy, language policy and curriculum and exemplify new research directions in the field.