The Ten Schools Admissions Organization is a group formed more than forty years ago by prep schools in New England and the Mid-Atlantic on the basis of a number of common goals and traditions. It comprises Choate Rosemary Hall, Deerfield Academy, The Hill School, The Hotchkiss School, The Lawrenceville School, Loomis Chaffee, St. Paul's School, Phillips Exeter Academy, Phillips Andover Academy, and The Taft School. A university-preparatory school or college-preparatory school (usually shortened to preparatory school, or prep school) is a private secondary school (or high school) designed to prepare a student for higher education. ... While the states marked in red show the core of New England, the regions cultural influence may cover a greater or lesser area than shown. ... The Mid-Atlantic States The Mid-Atlantic region of the United States of America, located in the northeastern section of the country, includes the following states and district: Delaware Maryland New Jersey New York Pennsylvania Washington, D.C. West Virginia Virginia These areas provided the young United States with heavy... Choate Rosemary Hall Pond view, Choate Rosemary Hall, Wallingford, Connecticut. ... Deerfield Academy is a prep school located in Deerfield, Massachusetts. ... The Hill School (a. ... Memorial Hall, a classroom building on the campus of The Lawrenceville School The Lawrenceville School is a historic American boarding school for grades nine through twelve, and is considered by many to be one of the most prestigious secondary schools in the United States. ... The Loomis Chaffee School is a college preparatory school located in Windsor, Connecticut. ... St. ... Phillips Exeter Academy (also called Exeter or PEA) is a co-educational independent boarding school located on 471 acres (1. ... Phillips Academy (also known as Andover and Phillips Andover) is a coed liberal arts high school, located in Andover, Massachusetts, near Boston. ... The Taft School is a private coeducational prep school in Watertown, Connecticut founded by Horace Dutton Taft in 1890. ...