Founding year: 1912
Address: Montverde Academy, 17235 7th Street | Montverde,, Florida, 34756, United States
Founding year: 1912
Address: Francis Parker School, 6501 Linda Vista St., San Diego,, California, 92111, United States
Founding year: 1912
Address: Hamden Hall Country Day School, 1108 Whitney Avenue Hamden, , Connecticut, 06517, United States
Founding year: 1912
Address: Lawrence Woodmere Academy, 336 Woodmere Boulevard, Woodmere, New York, 11598, United States
Founding year: 1912
Address: The Park School, 2425 Old Court Road Baltimore, Maryland, 21208, United States
Founding year: 1911
Address: St. Christopher's School, 711 St Christopher's Rd, Richmond, Virginia, 23226, United States
Founding year: 1911
Address: Ojai Valley School, 723 El Paseo Rd Ojai, California, 93023, United States
Founding year: 1911
Address: The Columbus Academy, 4300 Cherry Bottom Road, Gahanna, Ohio, 43230, United States
Founding year: 1911
Address: The Ethel Walker School, 230 Bushy Hill Road Simsbury, Connecticut, 06070, United States
Founding year: 1911
Address: Cotter Schools, 1115 W Broadway St, Winona,, Minnesota, 55987, United States
Founding year: 1911
Address: Maret School, 3000 Cathedral Ave NW, Washington, Alabama, 20008, United States
Founding year: 1910
Address: Garrison Forest School, 300 Garrison Forest Rd, Owings Mills,, Maryland, 21117, United States
Founding year: 1910
Address: Andrews Osborne Academy, 38588 MENTOR AVE, WILLOUGHBY, Ohio, 44094, United States
Founding year: 1910
Address: Army and Navy Academy, 2605 Carlsbad Blvd. Carlsbad, CA, California, 92008, United States
Founding year: 1909
Address: St. Albans School, Mount St. Alban, Washington, 20016-5069, United States
Founding year: 1909
Address: Westover School, 1237 Whittemore Road, Middlebury, Connecticut, 06762, United States
Founding year: 1909
Address: Tallulah Falls School, 201 Campus Drive, P.O. Box 10 Tallulah Falls, Georgia, 30573, United States
Founding year: 1909
Address: Ashley Hall, 172 Rutledge Ave, Charleston, SC , South Carolina, 29403, United States
Founding year: 1909
Address: The Bishop's School, 4141 Spring Valley Rd, Addison, Texas, 92037-4799, United States
Founding year: 1909
Address: Hargrave Military Academy, 200 Military Drive Chatham, , Virginia, 24531, United States
Founding year: 1909
Address: Blue Ridge School, 273 Mayo Dr, St George,, Virginia, 22935, United States
Founding year: 1909
Address: Kingswood-Oxford School, 170 Kingswood Road West Hartford,, Connecticut, 06119-1430, United States
Founding year: 1909
Address: The Piney Woods School, P.O. Box 100, Piney Woods, Alabama, 39148, United States
Founding year: 1908
Address: Shenandoah Valley Academy, 234 W Lee Hwy, New Market, Virginia, 22844, United States
Founding year: 1908
Address: Mount Saint Mary Academy, 1645 Route 22 West at Terrill Road, Watchung,, New Jersey, 07069, United States
Founding year: 1908
Address: Greenwood Laboratory School, 282 Farmers Row P.O. Box 991 Groton, , Massachusetts, 65897, United States
Founding year: 1908
Address: Lancaster Country Day School, 725 Hamilton Road Lancaster,, Pennsylvania, 17603, United States
Founding year: 1907
Address: Trinity-Pawling School, 700 Route 22. Pawling, New York, 12564, United States
Founding year: 1907
Address: St. John's Prep, 72 Spring Street Danvers, Massachusetts, 01923, United States
Founding year: 1907
Address: Forest Ridge, the Sacred Heart School of Seattle, 4800 139th Ave SE, Bellevue,, Washington, 98006, United States
Founding year: 1907
Address: Oratory Preparatory School, 425 Morris Ave Summit, New Jersey, 07901, United States
Founding year: 1907
Address: Highland Academy, 211 Highland Circle Dr. Portland, , Tennessee, 37148, United States
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