The Miseducation of English Learners examines the initial policy impact of Structured English Immersion (SEI), an English-only program mandated for English Learners (ELs) in California, Arizona, and Massachusetts in the United States. The book features analyses of: the legal context and parameters of SEI; research history on SEI; SEI language policy and policy implementation according to situated context; and the educational priorities and legal rights of ELs. The book examines the history of SEI in the educational research literature and as it has been interpreted in the context of the legal requirement for schools to take ""appropriate action"" to meet the needs of ELs following the historic Lau v. Nichols (1974) court decision. The Miseducation of English Learners also presents and considers the implementation of SEI in comparative contexts from various perspectives including teacher education, the classroom, and legal. In several of the chapters, SEI implementation is examined in concert with other factors that have effected the teaching and progress of ELs such as Senate Bill 2042 (2001) that overhauled the teacher education process in California, and the federal No Child Left Behind legislation (signed into law on January 8, 2002). Moreover, the book provides implications and recommendations for teaching, research, advocacy, and policy change.