Phillips Exeter Academy is one of the oldest private boarding school in the United States, and was founded in 1781, during the American Revolution, by John Phillips, as a school for only boys. The school opened to girls also in 1970. The school is known for its special teaching method, the Harkness method, where students discuss concepts instead of being lectured. The school has many important buildings, like the Class of 45 Library and the Exeter Inn. It has an art museum, called the Lamont Gallery.