Chinese is an ancient language, but the present scope of its global study is unprecedented. Comprehending the impacts of worldwide linguistic realities on 'Chinese as a Foreign Language' (CFL) teachers and students will be critical to its long-term success. The most important phenomenon has been the establishment of English as a lingua franca, especially in the expanding marketplaces of Asia. This book examines the role of English as a medium of instruction in CFL classrooms. It begins by integrating existing studies on the global spread of English with research on English as a medium of second language acquisition. Several valuable empirical analyses from actual CFL classrooms serve both to validate the use of English as a lingua franca and expose that much more work needs to be done to ground this practice in deep sociocultural and ecological settings. The author advocates the development of a new pedagogy that emphasizes taking account of specific cultural, social, and political contexts in order to reach an ever-more diverse body of students. The book concludes with a discussion of the role of English in China's national education system and social development, as well as predictions about the future relationship between Chinese and English.