Two-way, or bilingual, immersion education, a major innovation in the integration of language and content instruction, is intended to improve the quality of language education for language minority and language majority students in the United States. The emerging educational practice responds to the increasing proportions of language minority students in many parts of the country and also holds promise for improving the quality of foreign language instruction for language majority children. An introductory section describes the early Canadian experience with language and content integration, which began over 20 years ago, and discusses the benefits of bringing language majority and language minority students together in a single program of instruction (two-way, or bilingual, immersion). The basic bilingual immersion program model is discussed, and related research is reviewed. Two exemplary programs, Arlington, Virginia's Key Elementary School and California's Edison Elementary School in the Santa Monica-Malibu Unified School District, are discussed. The report concludes that bilingual immersion education can be a powerful vehicle for promoting the development of bilingual language proficiency and social competence in elementary school children, and that the success of this approach depends largely on teachers' sensitivity to the children's language abilities and needs. 28 references. (MSE)