This volume illustrates the implementation of immersion education, or the use of a second language as the medium of instruction, in North America, Europe, Asia, the Pacific, and Africa, in programs ranging from preprimary to tertiary level. Case studies cover its use for the purpose of teaching a foreign language, teaching a minority language, reviving a language, and teaching a language for wider communication or career advancement. This text will be of interest to teachers, teacher educators, and others involved in bilingual education.