This handbook provides a comprehensive, theoretical framework and practical guide to implementing, evaluating, administering, and maintaining a successful dual language instruction program. Practical tools include sample lessons, evaluation checklists, tables, and charts. Also provided are a list of reference materials, useful organizations, resource centers, and professional periodicals and journals. The book explicitly addresses effective ways of stimulating oral language development in the second language, teaching literacy and academic content in two languages, and appropriate ways of assessing dual language development. A "Voices From the Field" segment provides real-life examples of the principles and practices being implemented, complementing this volume's theoretical framework. Chapter titles include the following: "Critical Features of Enriched Education"; "Teaching Literacy in Two Languages"; "Teaching Content"; "Assessment"; "Model Lessons and Assessment Procedures"; and "Advocacy." Appendixes include: "A Glossary of Terms for Enriched Education Teachers"; "Publishers of Curriculum Materials"; "Useful Organizations, Resource Centers, Professional Periodicals and Journals"; "Informational Videotapes and Directories of Programs"; and an "Index to Tables and Figures." (Contains extensive references.) (KFT)