Bilingual education in the United States encompasses programs that use both English and students’ home languages to promote learning. It has been shaped by changing political priorities, policies, and debates over assimilation versus linguistic diversity. This entry reviews the history of bilingual education in the United States and how public opinion and political attitudes have shifted over time. It traces how policymakers and practitioners have viewed English language acquisition as either a tool of assimilation or as a resource for learning, and how support has moved from English-only immersion to dual language education programs. The discussion highlights how current assessment practices, focused on English-only standardized testing, have not kept pace with changing views of bilingual education. The entry concludes by identifying gaps in research and urging states to evaluate how comprehensively they serve their bilingual student population through their education policies and programs.