Ernesto Macaro brings together a wealth of research onthe rapidly expanding phenomenon of English MediumInstruction. Against a backdrop of theory, policy documents,and examples of practice, he weaves together research in bothsecondary and tertiary education, with a particular focus on thekey stakeholders involved in EMI: the teachers and the students.Whilst acknowledging that the momentum of EMI is unlikelyto be diminished, and identifying its potential benefits, theauthor raises questions about the ways it has been introducedand developed, and explores how we can arrive at a truecost-benefit analysis of its future impact."This state-of-the-art monograph presents a wide-ranging,multi-perspectival yet coherent overview of research, policy,and practice of English Medium Instruction around theglobe. It gives a thorough, in-depth, and thought-provokingtreatment of an educational phenomenon that is spreadingon an unprecedented scale."Guangwei Hu, National Institute of Education, SingaporeAdditional online resources are available atwww.oup.com/elt/teacher/emiErnesto Macaro is Professor of Applied Linguistics at theUniversity of Oxford and is the founding Director of the Centrefor Research and Development on English Medium Instructionat the university.Oxford Applied Linguistics Series Advisers:Anne Burns and Diane Larsen-Freeman