Presented is the final report of the Service Integration Project, a North Carolina demonstration project to facilitate collaboration of local programs particularly those sponsored by the Developmental Disabilities program and the Head Start program. Individual chapters deal with the following topics: overview of service integration; the human perspective of service integration; development of the project through mobilization of resources available through the Chapel Hill Training-Outreach Project, the Developmental Disabilities Technical Assistance System, and Region IV Network of services to the handicapped in Head Start; the service integration program plan; implementation of service integration; the state advisory task force for service integration; advocacy as an examination of its interaction within the human service delivery system; alternative models for interagency coordination; the collaborative process for service integration; evaluation; and recommendations for replication and investigation. Appendixes include an organization chart, the operating plan, project operating plan, calendar of events, Head Start needs assessment form questionnaire, agenda of a planning conference, the collaborative agreement form, sample letters, conference agenda, evaluation data from the State Advisory Task Force, a process manual for collaborative planning, and evaluation data. (DB)