- The Academy at Charlemont
- Atrium School
- Belmont Day School
- Catholic Memorial School
- The Chad Schools
- Cheshire Academy
- Community School of Naples
- Cushing Academy
- Derryfield School
- The Fessenden School
- Glen Urquhart School
- Gould Academy
- Hawaii Preparatory Academy
- Hebron Academy
- Jewish Community Day School
- Lower Canada College
- Phillips Brooks School
- Ridgefield Academy
- Solomon Schechter Day School of Boston
- Stoneleigh-Burnham School
- Storm King School
- Tilton School
- Touchstone Community School
- Wilbraham & Monson Academy
