Jim Cummins is a Professor Emeritus at the Ontario Institute for Studies in Education of the University of Toronto. His research focuses on literacy development in educational contexts characterized by linguistic diversity. In numerous articles and books he has explored the nature of language proficiency and its relationship to literacy development with particular emphasis on the intersections of societal power relations, teacher-student identity negotiation, and literacy attainment. He is the author (with Margaret Early) of Identity Texts: The Collaborative Creation of Power in Multilingual Schools (Trentham Books). His most recent book is Rethinking the Education of Multilingual Learners: A Critical Analysis of Theoretical Concepts published by Multilingual Matters (https://www.multilingual-matters.com/page/detail/Rethinking-the-Education-of-Multilingual-Learners/?k=9781800413573).