The AAA National District is a high school conference in the state of Virginia that includes schools from eastern Fairfax County and all of the public high schools in Arlington County.
The National District was founded in 1993 as part of an attempted realignment of the Northern Region. The charter members of the district were Edison, Mount Vernon, Stuart, Wakefield, Washington-Lee, West Potomac, and Yorktown High Schools.
Currently five of the eight member high schools compete at the 5A level and the remaining three at the largest 6A level in VHSL. With the 2013 post-season conference realignment, the 5A schools are apart of the post-season conference 13 and the 6A schools reside in conference 6, with Liberty District high schools. This process has been deemed very confusing due to the inter-twinning of regular season districts and post-season conferences. Generally speaking, the regular season conferences have been kept together for local purposes while the post-season conferences were put together for school population matters. (1)
The National District schools competed in the AAA Northern Region with the schools from the AAA Concorde District, the AAA Liberty District, and the AAA Patriot District.
Most of the National District schools have stayed intact since its founding. In 1996, West Potomac moved from the National to the Patriot and Falls Church was added from the Liberty District. From 2003-2005, Jefferson moved from the Concorde to the National only for football, where the Colonials clinched a Division 5 playoff berth in 2004.
Loudoun Valley of Purcellville was added in 2005 as a full member for football, but as a part-time member in other sports by participating only in post season district tournaments, because it was located about 50 miles or more west of the National District schools. In sports other than football, Valley played an independent schedule, usually against schools in the AA Dulles District. In 2007, Loudoun Valley was moved to the Northwest Region which was regarded as a welcomed move to the National District's members.