To learn more about the Regional Educational Service Agencies (RESA), Research for Better Schools initiated a multi-year study of RESAs in Pennsylvania and New Jersey. This report specifically describes local educators' perceptions about RESA services and the content areas in which RESAs offered help. It also suggests how successful service delivery occurred. This study is intended to inform general thinking and policy making about how to disseminate useful knowledge to schools. At the same time, it is intended to provide useful information to RESA staff and to state officials responsible for RESAs. A secondary purpose is to compare RESAs with centrally-developed dissemination programs and to explore RESAs' potential to support or supplement such programs. (PN)