Chapter I of this report on interinstitutional cooperation in New York State discusses the development, advantages, problems of and need for interinstitutional cooperation in the State and its priority in the planning effort. The second chapter presents an inventory of cooperative activities in higher education organized by region and priority as viewed by the Board of Regents. Chapter III discusses the contributions these cooperative ventures made to the Regents' priority concerns, such as the improvement of college and university financing and manpower development; the expansion of higher education opportunity; the extension of continuing education; the improvement of teacher education; the improvement of 2-year colleges; and the strengthening of the collegiate level system of libraries. Chapter IV deals with the need to extend cooperative projects to all regions of the State and the need to foster increased implementation of these projects, as well as with some of the financial barriers that retard the adoption of the cooperative programs and the need to make institutional personnel aware of the advantages of such programs. The last chapter provides recommendations for action needed to promote the development of increased cooperation. (AF)