The book "Bilingual Education" offers a comprehensive examination of the topic of bilingual education, where two or more languages are used as languages of instruction. It highlights the various aspects and challenges associated with the implementation of bilingual programs, particularly concerning migrant populations. The volume includes a detailed analysis of conceptual issues and discusses research findings in the field of bilingual education since the 1920s. Additionally, it presents various successful programs and policy approaches from around the world that serve as examples of the practical implementation of bilingual education. This work is part of a ten-volume encyclopedia on language and education published by Springer, which addresses the dynamic development and challenges of linguistic diversity in education.