Recent years have witnessed the creation of numerous Regional Educational Service Agencies (RESA), legally constituted agencies which serve specific educational needs for a pool of local school districts. A recent survey of RESA administrators examines these agencies according to size, purpose, and the populations they serve. Most frequently, activities focus on special education, remedial reading, career education, and vocational education. In the Detroit area, the Wayne County Intermediate School District serves the needs of the educational community by providing instructional developers who serve both as resources to and coordinators of local school districts. (EMH)