This paper presents a discussion of the theory of bilingual education, including ideas developed by several linguistic researchers. Various aspects of bilingual education are discussed including objectives, definition, raison d'etre, dominance and balance, learning, types, and barriers. Second language learning is considered along with reasons for studying a second language, relevant misconceptions, and obstacles to learning. The role of the effective teacher, bilingual word meaning, and test validity are covered in the paper. The author reports on educational experiments in bilingualism and provides a suggested lesson plan and bibliography. (VM)