Presented alphabetically by state are summaries of the legal provisions for delivery of educational services to handicapped children on a cooperative basis among school districts as of June 1, 1973. It is noted that the total number of school districts has steadily declined during the last 40 years. Among organizational patterns reported to be used to deliver special education services on a regional basis for tuition contracting (allowing two or more small districts to combine resources for the operation of one program); state wide regional organization (New York's Board of Cooperative Educational Services is an example); regional education service centers providing for instructional materials distribution, consultative assistance, and inservice training to meet special education needs of local districts (Texas is an example); and voluntary association of school districts into cooperatives to deliver special services, select personnel, and regulate financing. Another alternative is given to be the special district which concentrates on the delivery of a specific education service. The legal base of regional programs is reported to vary from minimal guidelines (Alabama, Mississippi, and New Mexico) to detailed laws and regulations regarding administrative responsibility and the types of services and programs to be offered (such as in California, Indiana, and Minnesota). (DB)