With the exponential growth of English-Medium Instruction (EMI) provision in higher education, which is rapidly outpacing empirical research, this book outlines approaches to EMI in a range of regional contexts to exemplify different interpretations of implementing EMI policy in higher education. The book provides an in-depth understanding of evolving interpretations, challenges and current policies on a global level, through the exploration of case studies from Armenia, Austria, Azerbaijan, Bangladesh, Brazil, China, Colombia, Denmark, Estonia, Ethiopia, Georgia, Hong Kong, Italy, Japan, Kuwait, Mexico, Nepal, the Netherlands, Poland, South Africa, Tunisia, Turkey and Vietnam. The case studies, which outline how EMI policy is implemented, are presented in three sections, at the national, institutional and classroom levels (macro, meso, and micro), using a variety of research tools, including policy analysis, stakeholders' conceptualisations of EMI, observations of EMI in practice and context analysis