- Blair Academy
- Choate Rosemary Hall
- Connecticut Junior Republic
- Dwight-Englewood School
- Groton School
- Holderness School
- Holy Child School at Rosemont
- Lancaster Country Day School
- Lawrence Academy
- Mercersburg Academy
- Mount Saint Mary Academy
- New Hampton School
- Noble and Greenough
- Peddie School
- Saint Joseph Regional High School
- Thayer Academy
- The Masters School
- The Williston Northampton School
- Thetford Academy
- Western Reserve Academy
- Woodberry Forest School