The seventh edition of this bestselling textbook has been extensively revised and updated to provide a comprehensive and accessible introduction to bilingualism and bilingual education in an everchanging world. Written in a compact and clear style, the book covers all the crucial issues in bilingualism at individual, group and societal levels. Updates to the new edition include: Hundreds of new citations from the latest research.Expanded discussion of key topics including codeswitching, translanguaging, multilingualism, multilingual education, superdiversity, critical post-structural sociolinguistics, language attitudes, motivation, language and power, raciolinguistics, language proficiency standards, and biliteracy.Greater focus on technology and language learning and use online, via mobile apps, and in social media.Chapters respond to the very latest demographics data.Coverage of recent policy changes and political debates (Census, ESSA, Proposition 58, LOOK Act, Seal of Biliteracy, Native Americans Preservation Act)