Asthma is the most common chronic disease in children. On this web site of the National Center for Environmental Health (NCEH) at the Centers for Disease Control and Prevention (CDC), health managers, disability coordinators, education services managers, program staff, and parents will find information on potentially effective interventions for asthma. This web site specifically discusses the methodology for identifying these interventions, as well as their application, results, lessons learned, a bibliography of reviewed literature, and case studies.