This book provides an overview and evaluation of the quality of bilingual education found in internationalised higher education institutions. Its authors focus on the multifaceted roles that language(s) play in these growing multilingual spaces and analyse and identify the many factors that account for quality multilingual degree programmes. The chapters cover themes such as language policy, quality assurance tools and indicators of quality and the authors approach issues of quality from very different and complementary perspectives, adopting for example, temporal, evaluative and developmental positioning, and taking micro, meso and macro level perspectives, while still keeping sight of the local realities, practices and possibilities. The contributions are written by authors working in Brazil, Finland, Mexico, Portugal, Spain, Sweden, Switzerland and the UK and have implications for researchers, education coordinators, practitioners and other stakeholders who are looking to design, launch and evaluate new programmes in any higher education context worldwide.