Loudoun County High School

The mascot for the school, the Raider, was named in honor of Mosby's Raiders. The mascot was chosen by a segregated student body in 1954.[3] The original school seal depicted the Raider on horseback with a Confederate Battleflag in his hands. This logo was changed in 1980 to the current design in the face of racial criticism over the emblem. However, when the first new gym was built and the logos were painted on the floor, the original design was accidentally used and had to be removed and repainted.

Attempts to remove the mascot were made in the 1970s and 1990s. Following the killing of George Floyd in 2020, alumni started a petition to change the mascot.[3] On June 30, 2020, the Loudoun County School Board officially removed the mascot.[4] The new mascot, the Captains, was adopted on September 2, 2020.[5]

In 1957 murals that illustrate important events and times in Loudoun County's history were painted in the Auditorium by the Loudoun Sketch Club. Two subsequent murals were created, one in the 1970s, the other in 2004 (commemorating the school's fiftieth year in operation).

County has undergone several renovations and expansions since it was opened. The first expansion occurred in 1966, with the addition of a Vocational Education Wing attached to the side of the front portion of the building (Vocational Education has since moved to C.S. Monroe Technology Center). In 1976, a second gym space was added (which is now used as the wrestling room). In 1990, a new science wing and cafeteria were built in the back of the high school, which allowed the old cafeteria to become the new site of the current band and chorus rooms. One large problem with the science wing was that it was located upstairs from the cafeteria, but was unconnected to the rest of the school's second story. In 1996, a new main gymnasium and girls locker rooms were completed. The new gymnasium can carry about 1,300 people, and the old main gym (which could only carry about 500) became the auxiliary gymnasium. Six foundation based trailers were built to replace classrooms that were displaced by the project.

In 1999, additional parking spaces were built around County because of the addition of eight temporary trailers that were placed on a faculty parking lot due to overcrowding; the trailers were moved to Loudoun Valley the next year when Stone Bridge opened. In 2002, two high school seniors set an assistant principal's office on fire, closing school for a week.[6] Because of the fire's damage, the school had to replace its old-fashioned bell system with an electronic one that the other five high schools at that time used. The main office was renovated before the end of the 2001-2002 school year.

In 2005, Loudoun County underwent its most extensive project in school history, an eighteen million dollar endeavor, which included the building of another auxiliary gym to replace the older one. The old auxiliary gymnasium turned into a new library, which used to be on the second floor. The library's area turned into a new section of classrooms, which eliminated the need for the six foundation based trailers. Additional classrooms were built adjacent to the science wing. Aerial walkways were built, connecting the separated second floors. The renovation was completed in late 2006. It is now one of four high schools in the Town of Leesburg.

A renovation of the NJROTC building totalling 3 million dollars took place during the summer of 2017.

County originally opened up as a segregated school for whites. Black students went to Douglass High School. In the 1968-1969 school year, County became fully integrated.[7]

On the week of Friday, April 21, 2017, six senior students from Loudoun County High School's "Young Conservatives" club shared on social media that the LCHS school administration had rejected an America-themed "spirit day" for being "too political."[8][9] The students then proceeded to post flyers around the school declaring the following Monday to be "America Monday," which were reportedly torn down by school officials.[10][11][12] LCPS public relations officer later stated that the flyers were taken down because the students did not seek "permission to display them on school property."[10] Following the reports by the club, other students, and an op-ed by Daniel Eisert to the LoudounNow newspaper, the administration received backlash on social media for the reported decision, and "America Monday" received support from parents, members of the school's "Young Democrats" club, and students from other schools. By the evening of Friday, April 21 the LCHS principal announced that the following Monday would be changed to "America Monday" in an email sent out to parents.[13][8][14][10]

On the following Monday, April 24 it was reported by ABC 7 News, Conservative Review, Red Alert Politics, and the Loudoun Times-Mirror that America Monday went on as planned and students were seen in red, white, and blue. The administration reported to ABC7 News that the students "didn't officially bring the idea" of America Monday to them, despite the Student Government bringing the idea to them several months prior. Additionally, the Conservative Review reported that the administration told them the idea was turned down because America-themed days had been held in the past, and they wanted a more "diverse mix of themes" despite an America-themed spirit day not held since at least 2010.[8][12][11][10]

Loudoun County High School is a fully accredited high school based on its overall performance on the Standards of Learning tests in Virginia.

In 1958, The school was evaluated and accredited by the Southern Association of Colleges and Schools.

The average SAT score in 2006 for Loudoun County was a 1,582 (530 in Math; 537 in Critical Reading; 515 in Writing).

The raiders have a stadium which features a 400m track and a multipurpose AstroTurf field used for football, soccer, lacrosse and field hockey. Beside the stadium is a practice field on grass which has field goal posts and soccer nets. Other outside facilities include 6 tennis courts, a baseball field, a softball field and a marching band practice field. Inside is a main and auxiliary gym, as well as a weight room and wrestling/gymnastics facility.