19th century
Thomas Sidwell started a "Friends' Select School" in 1883 on I Street in downtown Washington, four blocks from the White House. It opened … See more

In 2005, Sidwell's AP English Exam scores were the highest in the nation for all medium-sized schools (300–799 students in grades 10–12) … See more

Sidwell's athletic teams are known as the Quakers; their colors are maroon and gray. The Quakers compete in the Mid-Atlantic Athletic … See more

The Middle and Upper School campus is located at 3825 Wisconsin Avenue, N.W., Washington, D.C., 20016-2907
• 15-acre (6.1 ha) Wisconsin Avenue campus in the North Cleveland Park section of Northwest Washington
• Earl … See more

In 2016, the school revised its policy on sexual misconduct after reports that a teen had been raped by her ex-boyfriend on the school's campus. No charges were filed against the teen, and the school installed more security cameras to deter future assaults. Despite … See more

• For the 2022–2023 school year, 1,142 students are enrolled.
• 57% of the student body are people of color. See more

Activism
• Robert F. Kennedy Jr. (transferred to Georgetown Preparatory School), American environmental attorney and activist
• Tracye McQuirter (1984), vegan activist See more