School nursing has been defined by the National Association of School Nurses (NASM) as a "specialized practice of professional nursing that advances the well-being, academic success, and life-long achievement of students." The school nurse is the provider of health care for students, the planner and coordinator of the school health program, a communicator, an educator, and an investigator. A school nurse wears many hats and has several roles and duties in the school health program. The school nurse is a counselor and a health educator. He/she can also play the role of case manager, deliverer of services, and advocate. A school nurse may also contribute time to policy development and quality improvement.