Founding year: 1962
Address: The Colorado Springs School, 21 Broadmoor Avenue, Colorado Springs, Colorado, 80906, United States
Founding year: 1962
Address: Brebeuf Jesuit Preparatory School, 2801 W 86th St, Indianapolis, Alabama, 46268, United States
Founding year: 1962
Address: Rio Lindo Adventist Academy, 3200 Rio Lindo Ave. Healdsburg,, California, 95448, United States
Founding year: 1962
Address: Carolina Friends School, 4809 Friends School Rd, Durham,, North Carolina, 27705, United States
Founding year: 1962
Address: Carmel Catholic High School, 1 Carmel Pkwy, Mundelein, Illinois, 60060, United States
Founding year: 1961
Address: Viewpoint School, 23620 Mulholland Highway Calabasas, California, 91302, United States
Founding year: 1961
Address: Florida Preparatory Academy, 1950 South Academy Dr, Melbourne,, Florida, 32901, United States
Founding year: 1961
Address: Bass Memorial Academy, 6433 US-11, Lumberton, Alabama, 39455, United States
Founding year: 1961
Address: Phoenix Country Day School, 3901 E. Stanford Drive, Paradise Valley,, Arizona, 85253, United States
Founding year: 1961
Address: Pingree School, 537 Highland Street South Hamilton,, Massachusetts, 01982, United States
Founding year: 1961
Address: Saint Andrew's School, 3900 Jog Road Boca Raton, Florida, 33434, United States
Founding year: 1961
Address: Santa Fe Preparatory School, 1101 Camino De La Cruz Blanca Santa Fe, New Mexico, 87505, United States
Founding year: 1961
Address: Le Jardin Academy, 917 Kalanianaole Highway Kailua, , Hawaii, 96734, United States
Founding year: 1960
Address: Mater Dei Catholic High School, 1615 Mater Dei Dr, Chula Vista, Alabama, 91913, United States
Founding year: 1960
Address: Valley Christian High School, 100 Skyway Dr San Jose, California, 95111, United States
Founding year: 1960
Address: Northland Scholars Academy, W10085 Pike Plains Rd, Dunbar, Alabama, 54119, United States
Founding year: 1960
Address: Strake Jesuit College Preparatory School, 8900 Bellaire Blvd, Houston, Texas, 77036-4699, United States
Founding year: 1960
Address: Stratford Academy, 6010 Peake Rd Macon, Georgia, 31220, United States
Founding year: 1960
Address: Augusta Preparatory Day School, 285 Flowing Wells Rd, Augusta, Alabama, 30907, United States
Founding year: 1960
Address: Greenhills School, 850 Greenhills Dr., Ann Arbor, , Michigan, 48105, United States
Founding year: 1960
Address: The Benjamin School, 11000 Ellison Wilson Rd North Palm Beach, Florida, 33418, United States
Founding year: 1960
Address: Bishop Kelley High School, 3905 S Hudson Ave, Tulsa, Alabama, 74135, United States
Founding year: 1960
Address: The College Preparatory School, 6100 Broadway, Oakland, California, 94618, United States
Founding year: 1960
Address: Berkeley Preparatory School, 4811 Kelly Rd, Tampa,, Florida, 33615, United States
Founding year: 1960
Address: Ranney School, 235 Hope Road Tinton Falls, New Jersey, 07724, United States
Founding year: 1960
Address: Louisville High School, 22300 Mulholland Drive Woodland Hills, , California, 91364, United States
Founding year: 1960
Address: Leman Manhattan Preparatory School, 41 Broad St, New York,, New York, 10004, United States
Founding year: 1959
Address: Marian High School, 7225 Lahser Road Bloomfield Hills, Alabama, 48301, United States
Founding year: 1959
Address: Nebraska Christian Schools (NCS), 1847 Inskip Ave, Central City, Alabama, 68826, United States
Founding year: 1959
Address: St. Paul's School for Girls, 11232 Falls Road P.O. Box 8000 Brooklandville, Maryland, 21022, United States
Founding year: 1959
Address: York School, 9501 York Road Monterey, California, 93940, United States
Founding year: 1959
Address: Hampton Roads Academy, 739 Academy Lane Newport News, , Virginia, 23602, United States
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