School Based Health Centers (SBHC) are considered by experts as one of the most effective and efficient ways to provide preventive health care to children. Few programs are as successful in delivering health care to children at no cost to the patient, and where they are: in school. For many underserved children, The Children's Aid Society's school-based health centers are their first and only access to health care. With a parent's consent for services, medical, dental and mental health issues are addressed in the school setting. This proactive approach prevents health issues from becoming acute concerns in the home, emergency room or community. As a result, youngsters miss fewer school days and parents miss fewer days at work. This paper describes the following SBHC programs of the Children's Aid Society: (1) Ready to Achieve Cardiovascular Health (REACH); (2) ChildSight Vision Screenings; (3) Reproductive Health Project; (4) Early Recognition Program; (5) No-Touch Dental Screenings; and (6) Orthodontic Clinic.