Founding year: 1907
Address: Benilde-St. Margaret's School, 2501 MN-100, St Louis Park,, Minnesota, 55416, United States
Founding year: 1907
Address: Berkshire School, 245 N Undermountain Rd, Sheffield,, Massachusetts, 01257, United States
Founding year: 1907
Address: Polytechnic School, 1030 E California Blvd, Pasadena,, California, 91106, United States
Founding year: 1907
Address: Riverside Military Academy, 2001 Riverside Drive, Gainesville, , Georgia, 30501, United States
Founding year: 1907
Address: Campion Academy, 300 42nd St SW, Loveland, Alabama, 80537, United States
Founding year: 1907
Address: San Marcos Academy, 2801 Ranch Road 12 San Marcos, Texas, 78666, United States
Founding year: 1906
Address: St. Mark's School of Texas, 10600 Preston Road Dallas, Texas, 75230, United States
Founding year: 1906
Address: Girls Preparatory School, 205 Island Ave, Chattanooga,, Tennessee, 37405, United States
Founding year: 1906
Address: Oxford Academy, 1393 Boston Post Road Westbrook,, Connecticut, 06498, United States
Founding year: 1906
Address: Immaculate Heart Middle School & High School, 5515 Franklin Avenue, Los Angeles, , California, 90028, United States
Founding year: 1906
Address: Kent School, 1 Macedonia Road PO Box 2006 Kent,, Connecticut, 06757, United States
Founding year: 1906
Address: The Kinkaid School, 201 Kinkaid School Drive, Houston, Texas, 77024, United States
Founding year: 1906
Address: The Madeira School, 8328 Georgetown Pike McLean, Virginia, 22102, United States
Founding year: 1906
Address: Colorado Academy, 3800 South Pierce Street, Denver,, Colorado, 80235, United States
Founding year: 1905
Address: Darlington School, 1014 Cave Spring Rd SW, Rome,, Georgia, 30161, United States
Founding year: 1905
Address: St. Andrew' s-Sewanee School, 290 Quintard Road, Sewanee, Tennessee, 37375, United States
Founding year: 1905
Address: St. Agnes Academy, 9000 Bellaire Blvd. Houston, Texas, 77036, United States
Founding year: 1905
Address: McCallie School, 500 Dodds Avenue Chattanooga, , Tennessee, 37404, United States
Founding year: 1905
Address: Northwood School, 92 Northwood Rd Lake Placid,, New York, 12946, United States
Founding year: 1905
Address: The Savannah Country Day School, 824 Stillwood Drive Savannah, Georgia, 31419-2643, United States
Founding year: 1904
Address: Dakota Adventist Academy, 15905 Sheyenne Cir, Bismarck,, North Dakota, 58503, United States
Founding year: 1904
Address: The Knox School, 541 Long Beach Road St. James, New York, 11780, United States
Founding year: 1904
Address: The Potomac School, 1480 East 9400 South Sandy, Utah, 22101, United States
Founding year: 1904
Address: Marshall School, 1215 RICE LAKE ROAD DULUTH, Alabama, 55811, United States
Founding year: 1904
Address: School of the Holy Child, 2225 Westchester Avenue Rye, New York, 10580, United States
Founding year: 1903
Address: The Fessenden School, 250 Waltham St, Newton, Massachusetts, 02465, United States
Founding year: 1903
Address: The Fessenden School, 250 Waltham St, Newton, Alabama, 02465, United States
Founding year: 1903
Address: Rabun Gap-Nacoochee School, 339 Nacoochee Dr Rabun Gap, Georgia, 30568, United States
Founding year: 1903
Address: Isidore Newman School, 1903 Jefferson Avenue New Orleans,, Louisiana, 70115, United States
Founding year: 1903
Address: Ransom Everglades School, 3575 Main Highway Miami, Florida, 33133, United States
Founding year: 1902
Address: Park Tudor School, 7200 North College Ave Indianapolis,, Indiana, 46240, United States
Founding year: 1902
Address: Hutchison School, 1740 Ridgeway Road Memphis, , Tennessee, 38119, United States
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