This report describes and discusses the results of a 5-year program evaluating the effectiveness of computer-assisted instruction (CAI) for compensatory education of elementary school students. The report comprises seven parts: (1) an overview of the final report, in which project background, methodology, findings, and implications are summarized; (2) a descriptive study of CAI in compensatory education, in which the setting for the project, the acquisition and operation of the CAI systems, and various perspectives on CAI are discussed; (3) a description of the CAI curricula employed during the project, including accounts of the mathematics, reading, and language arts curricula, student time on computers, and student progress in CAI curricula; (4) an analysis of the effectiveness of CAI, in which research design and methodology, 1-year experimental studies, longitudinal studies, and treatment effects are discussed; (5) a descriptive review of longitudinal patterns of student attitudes toward the CAI curriculum; (6) an assessment of CAI as an instructional medium in the Los Angeles County Unified School District setting; and (7) an evaluation of the costs of CAI and a meta-cost-effectiveness analysis of educational intervention. (JL)