The report summarizes findings of a study of the cost of special education and related services for handicapped children, using information from a national survey taken in 1977-1978. The document is divided into 22 sections, beginning with an introduction which describes the study's objective, gives an overview of findings, and outlines the report. Sections II and III describe the selection of a nationally representative sample and the data collection and analysis methods. Personnel salaries and work years are examined in Section IV. A fifth section summarizes the educational placements and age levels of handicapped students served. Sections VI through XVII discuss the estimated costs of various types of special education and related services, including costs of special education teacher instruction, special education aides, regular education teacher and aide instruction, related services personnel, screening, assessment, admission and individualized education program development, staff inservice training, technical assistance, transportation, and other costs. Sections XVIII through XXI summarize the estimated total and added costs of special education and related services, as well as cost weighting factors. Finally, Section XXII presents the variation in the total cost of special education by size of school district enrollment. (SB)