North Bethesda, Maryland | High School, 9-12 , All-boys | Founded in 1789
Bethel, Maine | High School, 9-12, PG, Co-ed | Founded in 1836
Austinburg, Ohio | High School, 8-12, PG , All-boys | Founded in 1831
Tyrone, Pennsylvania | High School, 7-12 , All-girls | Founded in 1853
Groton, Massachusetts | Grades 8-12, Co-ed | Founded in 1884
Kamuela, Hawaii | High School , 9-12, PG | K-12, PG (day), Co-ed | Founded in 1949
Hebron, Maine | High School , 9-12, PG | 6-12, PG (day), Co-ed | Founded in 1804
Wilton, New Hampshire | High School, 9-12 | Pre-K-12 (day), Co-ed | Founded in 1942
Plymouth, New Hampshire | High School, 9-12, PG, Co-ed | Founded in 1879
Lakeville, Connecticut | Grades 9-12 & PG | Founded in 1891