Yuko Goto Butler is Associate Professor of Language and Literacy in Education at the Graduate School of Education at the University of Pennsylvania. Her research interests are primarily associated with the improvement of second and foreign language education among young learners in the U.S. as well as in Asia in response to the diverse needs of an increasingly global world. Dr. Butler has been interested in identifying effective ESL/EFL teaching and learning methods and strategies that take into account the relevant linguistic and cultural contexts in which instruction takes place. She is also interested in how we can effectively assess children’s second/foreign language proficiency and how best to evaluate the effectiveness of various programs and policies for language education. Her most recent project examines various issues that have arisen in conjunction with the introduction of English language instruction at the elementary school level in select Asian countries.