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- AIM Academy, Conshohoken, PA
- Almaden Country Day School, San Jose, CA
- Ann Arbor Academy, Ann Arbor, MI
- Ascentis Awarding Organisation, Lancaster, UK
- Assets School, Honolulu, HI
- Athena Academy, Palo Alto, CA
- Atlanta Speech School, Atlanta, GA
- Aucocisco School and Learning Center, Cape Elizabeth, ME
- Baltimore Lab School, Baltimore, MD
- Berean Christian High School, West Palm, FL
- Bodine School, Germantown, TN
- Brehm Preparatory School, Carbondale, IL
- Bridgemark Center for Learning, Tyler TX
- Bright Beginnings Academy, Mobile AL
- Cambridge School, Pennington, NJ
- Camp Spring Creek, Bakersville, NC
- Camperdown Academy, Greenville, SC
- Carolina Day – The Key School, Ashville, NC
- Carroll School, Lincoln, MA
- Charles Armstrong School, Belmont, CA
- Charlotte Latin School
- Chartwell School, Seaside, CA
- Chatham Academy, Savannah Georgia
- Churchill Center and School, St Louis, MO
- Churchill School and Center, NYC, NY
- Chesapeake Bay Academy, Virginia Beach, VA
- Currey Ingram Academy, Brentwood, TN
- Delaware Valley Friends School, Paoli, PA
- Eagle Hill, Greenwich, CT
- Eagle Hill, Hardwick, MA
- Fortune Academy, Indianapolis, IN
- Fraser Academy, Vancouver, BC
- Frostig School, Pasadena, CA and West LA, CA
- Gates School, Charleston, SC
- Gateway Learning Center, Poulsbo, WA
- Glenwood Academy, Glenwood, MD
- Gow School, South Wales, NY
- Greenwood School, Putney, VT
- Greengate Schoolhouse
- Groves Academy, St Louis Park, MN
- Hamilton School at Wheeler, Providence, RI
- Hamlin Robinson School, Seattle WA
- Havern School, Littleton, CO
- Hill Learning Center, Durham, NC
- Hope Academy for Dyslexics, Concord, CA
- Horizon Academy, Roeland Park, KS
- Howard School, Atlanta, GA
- Hyde Park Day School, Chicago, IL
- James Cameron School, Maple Ridge, BC
- Jemicy School, Owings Mills, MD
- Kildonan School, Amenia, NY
- Lakes and Bridges Charter School, Easley, SC
- Landmark School, Beverly, MA
- Lawrence School, Sagamore Hills OH
- Laurel School, Princeton, NJ
- Learning Center @The Lexington School, Lexington, KY
- Learning Prep School, West Newton, MA
- Legacy School, Sykesville, MD
- May Center for Learning, Sante Fe, NM
- Marburn Academy, Columbus, OH
- McGlannan School, Miami FL
- Middlebridge School Narragansett RI
- Mitchell College, New London, CT
- New Bridge School, Poway, CA
- Noble Academy, Greensboro, NC
- North Broward Preparatory School – Lighthouse Point Academy, C0oconut Creek, FL
- North Bridge Academy, Larkspur, CA
- Oakwood School, Annandale, VA
- Parish School, Houston, TX
- Park Academy, Lake Oswego, OR
- Park Century School, LA, CA
- Roig Academy, Miami, FL
- Rawson-Saunders School, Austin, TX
- Royce Learning Center, Savannah, GA
- Rumson Country Day-The Jayne S. Carmody School, Rumson, NJ
- Sage School, Suwanee, GA
- Sally Borden Program at Friends Academy, Dartmouth, MA
- Sand Hill School, Palo Alto, CA
- Sea of Strengths Academy, Lakewood Ranch FL
- Sharp Academy, Lubbock, TX
- Siena School, Silver Spring, MD & Oakton, VA
- Skyuka Hall School, Chattanooga, TN
- Spring Valley School, Birmingham, AL
- Springer School and Center, Cincinnati, OH
- Stellar Academy for Dyslexics, Newark, CA
- Stephen Gaynor School, NY, NY
- Stratford Friends School, Newtown Square, PA
- The Bedford School, Fairburn, GA
- The Briarwood School, Houston, TX
- The Bridge at The Christ School, Orlando FL
- The Brighton School, Baton Rouge, LA
- The Cedar School, Greenwich, CT
- The Christ School, Orlando, FL
- The Craig School, Mountain Lakes, NJ
- The DePaul School, Clearwater, FL
- The Depaul School, Louisville, KY
- The Fletcher School, Charlotte, NC
- The Hillside School, Macungie, PA
- The Janus School, Mount Joy, PA
- The John Crosland School, Charlotte, NC
- The Lab School of Washington, Washington DC
- The New Community School, Richmond, VA
- The New Grange School, Hamilton Township, NJ
- The Paracletus School, Houston, TX
- The Quaker School at Horsham, Horsham, PA
- The Schenck School, Atlanta GA
- The Southport School, Southport, CT
- The Summit Point School, Takapuna, Auckland, NZ
- The Summit School, Edgewater, MD
- The Windward School, White Plains, NY
- The Wolf School, East Providence, RI
- Swift School, Roswell, GA
- Tampa Day School, Citrus PK, FL
- Thayer Academy, Braintree, MA
- Triad Academy at the Summit School, Winston Salem, NC
- Trident Academy, Mt Pleasant, SC
- Vertical Skills Academy, Evergreen, CO
- Wasatch Academy, Encino, CA
- Westmark School, Encino, CA
- Wheeling Country Day School, Wheeling WV
- White Oak School, Westfield, MA
- Woodlynde School, Strafford, PA
- Wye River Upper School, Centerville, MD