This study on early intervention gathered information about the needs of families in San Diego, California, and the impact of services provided by local agencies and schools. Units involved in the study were the city and county of San Diego, the San Diego Community College District, and San Diego City Schools. The study was conducted at Hamilton Elementary School, which is located in San Diego's densely populated, multiethnic City Heights area, and is straining to help families with many severe needs. The study addressed these questions: (1) How many families receive services from the county, city, or from community-based agencies funded by the county or city? (2) What services do they receive? (3) Are they eligible for services that they do not receive? (4) Is there a relationship between a family's use of social and health services and the academic and social success of their children? (5) What barriers do families encounter when they try to get help from the system? (6) What barriers exist in the system as seen by agency staff? (7) Can the service delivery system be made more responsive to the needs of families in neighborhoods like Hamilton's in a way that is integrated and cost-effective? This report provides a summary of findings from the study, draws conclusions from those findings, and suggests a system of integrated services for children and families. Appendices provide a paper on related research, a summary of project budget and in-kind contributions, forms and materials used in the study, guidelines on collaboration, and an overview of parallel reforms. (RH)