New fiscal and administrative patterns are being considered or implemented in many States to provide quality education, accessible to all, at costs the public can accept and support. This paper is concerned with the structure of delivery systems whereby services are provided to pupils. Specifically it deals with the re-emergence of the intermediate educational unit as a viable alternative system for the provision of cooperative services to local school districts. Wisconsin's cooperative educational service agencies (CESAs) are described structurally and functionally from a general perspective. In addition, the cooperative services provided for educationally disadvantaged and handicapped children are examined in greater detail. Case studies of ESEA Title I and special education cooperative programs in two CESAs are also included as examples of the potential of regional agencies regarding the provision of differential services to children with special educational needs. (Author/WM)