National Cathedral School (NCS) is an independent Episcopal private day school for girls in grades 4–12 located on the grounds of the Washington National Cathedral in Washington, D.C., United States. Founded by philanthropist and suffragist Phoebe Apperson Hearst and Bishop Henry Yates Satterlee in 1900, NCS is the oldest of the institutions constituting the Protestant Episcopal Cathedral Foundation.
Its brother school, St. Albans, and the shared coeducational elementary school (K–3), Beauvoir,[1] are also located on the 57-acre Cathedral Close in Northwest Washington near the Washington National Cathedral.