AAP committees are responsible for the development of most policy statements that are published by the AAP. 

For a list of AAP committees visit http://www.aap.org/visit/aapcomm.htm

If you are interested in serving on a national committee, a list of vacancies is posted yearly in the fall and is available on the Member Center. Information will also be sent to you via the SOYP listserv, when positions become available.