Groton, Massachusetts | Grades 9-12, Co-ed | Founded in 1793
New York, New York | High School, 9-12 | K-12 (day), Co-ed | Founded in 2005
Newcastle, Maine | Grades 9-12, Co-ed | Founded in 1801
Lititz, Pennsylvania | High School, 6-12, PG, All-girls | Founded in 1746
Windsor, Connecticut | High School, 9-12, PG, Co-ed | Founded in 1874
Lyndon Center, Vermont | High School, 9 - 12, Co-ed | Founded in 1867
Thompson, Connecticut | High School, 9-12, PG, Co-ed | Founded in 1926
Toledo, Ohio | High School, PK-12, Co-ed | Founded in 1884
Chattanooga, Tennessee | High School, 9-12 | 6-12 (day), All-boys | Founded in 1905
Mercersburg, Pennsylvania | High School, 9-12, PG, Co-ed | Founded in 1893