Nancy H. Hornberger is Professor of Education and Director of Educational Linguistics at the Graduate School of Education, University of Pennsylvania. Her interests include language planning and policy; bilingualism, bilingual education and biliteracy; and the ethnography of communication. Jasone Cenoz is professor at the University of the Basque Country. She focuses on the psycholinguistic, sociolinguistic and educational aspects of bilingualism and multilingualism.
Ulrike Jessner is Associate Professor in the Department of English at the University of Innsbruck, Austria.