Ernesto Macaro is Emeritus Professor of Applied Linguistics at the University of Oxford. Before becoming a teacher educator and researcher in language learning he was a language teacher for 16 years. His research has focused on second language learning strategies and on the interaction between teachers and learners. He now applies these foci to classrooms where academic content is being taught through English. Mark Searle is an Honorary Norham Fellow, Associate of the EMI Research Group and previously was a Lecturer in ELT in the University of Oxford Department of Education. For many years he was a senior consultant teacher trainer for the British Council, designing and delivering teacher training courses in EAP and EMI in universities worldwide. This experience has given him considerable insight into the needs of EMI teachers and learners in many different contexts. He has also co-designed and co-delivered EMI teacher training courses with Ernesto Macaro both in the Department of Education and abroad.