The Buffalo School Health Demonstration Plan is an innovative model program designed to expand and improve the delivery of health services and health education to school-age children attending Buffalo (New York) schools, with emphasis on lower socioeconomic youth. It seeks to develop a primarily preventive program that attempts to modify attitudes and health practices of students for long range benefit and to determine health status of students, arrange for remediation of problems, and assure appropriate response to injury and sudden illness. Essential features of the project structure are: (1) a collaborative, multi-agency approach to the provision of services and (2) functional and reciprocal links with community-based health care providers. Four interdependent components comprise an effective school health program: (1) school health education, (2) school health services, (3) parental education and support, and (4) community support services. This report begins with a description of each of these four project components and of the evaluation methodology. It then provides evaluation findings from 1980-1984. Appendices provide a glossary of terms, sample logs and forms, and materials used to evaluate health attitudes and knowledge. (KHW)