This paper describes a preschool health screening service in which nurses, contracted through the Visiting Nurse Association, are assigned to day care centers receiving Title XX funds. The program focuses on health, safety and nutrition education. Screening includes history and physical assessment, developmental assessment, assessment or updating of immunizations, vision and hearing screening, urinalysis, tuberculin skin test, screening for anemia and sickle cell trait or disease, and screening for lead poisoning. Changes in the program since its inception include screening all children whether or not they receive Medical Assistance and screening children with a parent present. Advantages of the program are discussed and results of two years' screening efforts are presented in tabular form. (SB)