Dr Ofelia García is professor at Teachers College, Columbia University where she is presently coordinator of the Bilingual/Bicultural Education Program in the Department of International and Transcultural Studies and co-director of the Center for Multiple Languages and Literacies. Her publications, in the areas of bilingual education and sociology of language, include Policy and Practice in Bilingual Education. Extending the Foundations, co-edited with Colin Baker.

Dr Colin Baker is Professor of Education at the University of Wales, Bangor. He is the author of 12 books and over 50 articles on bilingualism and bilingual education including 'Foundations of Bilingual Education and Bilingualism (Multilingual Matters, 4th edition, 2006). He is Editor of the International Journal of Bilingualism and Bilingual Education.