Jack K.H. Pun is an Assistant Professor at the Department of English, City University of Hong Kong. He holds a doctorate in Education from the University of Oxford, which explored the teaching and learning process in EMI science classrooms, with a special focus on classroom interactions, use of codeswitching, and teachers’ and students’ views of EMI. His research interests lie in English Medium Instruction and Health Communication.Samantha Curle is an Assistant Professor at the Department of Education, University of Bath, UK. She completed her DPhil at the University of Oxford. She teaches subjects related to Applied Linguistics and is currently the Director of the MRes programme in Advanced Quantitative Research Methods. Her main research interest lies in factors affecting academic achievement in English Medium Instruction. Her research has been published in journals such as Language Teaching, Applied Linguistics Review, System, and International Journal of Bilingual Education and Bilingualism.