The Dulles District was created in 2001 from all six Loudoun County high schools that were in the
AA Northwestern District, which were
Broad Run High School,
Loudoun County High School,
Loudoun Valley High School,
Park View High School,
Potomac Falls High School, and
Stone Bridge High School. The Dulles District's name is derived from the district's proximity to
Washington Dulles International Airport, which is located in eastern Loudoun County.
Membership Changes Loudoun County's growth has been a factor in creating the Dulles District as more high schools in the county were being built during the 2000s, including four new members in the district since its founding in 2001. In 2002,
Heritage High School opened; in 2003,
Dominion High School opened; in 2005,
Briar Woods High School and
Freedom High School opened. In 2005, Loudoun Valley was moved to the
AAA National District and Stone Bridge moved to the
AAA Liberty District because their enrollments were considerably above the AA/AAA enrollment cutoffs. In 2007,
George Mason High School in
Falls Church, Virginia became the first non-Loudoun County school to enter the Dulles District, though only as a part-time member for lacrosse only, as their district, the
A Bull Run District did not hold enough members to sponsor it. Mason's swim team will also be competing in the Dulles District in the 2009–2010 season. In 2009, Heritage was moved to the
AAA Cedar Run District and the
AAA Northwest Region due to their increasing enrollment.
Woodgrove High School of Purcellville and
Tuscarora High School of Leesburg joined the district when they opened in 2010. Loudoun Valley and Heritage returned to AA in 2011 because of the new school openings. In 2011, Broad Run and Freedom moved up to the
AAA Cedar Run District. John Champe High School joined the AA Dulles District when the school opened in 2012 and Independence High School and Lightridge High School joined the Dulles district when the schools opened in 2019 and 2020. In the 2013–2014 school year, the Dulles District will be split as a result of the overall VHSL realignment. Current and former member schools in the 5A classification, Briar Woods, Broad Run, Freedom, Potomac Falls and Tuscarora will form the new
Potomac District. Stone Bridge will remain in the Liberty District. Schools in the 4A and 3A classification, Champe, Dominion, Heritage, Loudoun County, Loudoun Valley, Park View,
Riverside, and Woodgrove will remain in the Dulles District. In the postseason, schools will compete only against members of the same group classification. ==Strengths and Notable Facts on the Dulles District==