This book honors the impactful work of Terrence G. Wiley on advancing social justice in the areas of language diversity and language policy. It brings together a group of experienced scholars to provide an overview of research and progress in three areas: heritage and community language education, ideologies of language and literacies, and language policy. The chapters cover a wide range of formal and informal learning spaces and address language policies and practices from the national to the local levels. The international appeal of Wiley’s work is represented through the rich diversity of the contributing scholars and research contexts. With an emphasis on advancing scholarship and advocacy for language minoritized populations in the United States and around the world, this book will be of interest to graduate students and researchers in the fields of language education, language policy and sociolinguistics.