Teresa L. McCarty is G.F. Kneller Chair in Education and Anthropology and Faculty in American Indian Studies, University of California, Los Angeles, USA. Her research focuses on Indigenous education, language planning and policy, language revitalization/reclamation, critical ethnography, and educational and linguistic anthropology. Sheilah E. Nicholas is a member of the Hopi Tribe and an Associate Professor in the Department of Teaching, Learning and Sociocultural Studies, and American Indian Studies, University of Arizona, USA. Her research interests include Indigenous/Hopi language reclamation and maintenance, Indigenous language ideologies and epistemologies, the intersection of language, culture and identity, and Indigenous language teacher education. Gillian Wigglesworth is Distinguished Professor of Linguistics and Applied Linguistics at the University of Melbourne, Australia and chief investigator in the ARC Centre of Excellence for the Dynamics of Language. Her research interests include the languages of Indigenous children growing up in remote communities in Australia, the complexity of their language ecology, and how these interact with English once they enter the formal school system.