* designates associate member school Berwick Academy Brewster Academy Cardigan Mountain School Carrabassett Valley Academy Cheverus High School Community School Gould Academy Hampstead Academy Hyde School Kimball Union Academy Long Trail School Maine Central Institute Maple Street School New Hampton School North Yarmouth Academy Phillips Exeter Academy Pine Ridge School Putney School St. Johnsbury Academy St. Paul's School The Derryfield School The Sharon Academy Thornton Academy Waynflete School Wolfeboro: The Summer Boarding School