- Asia Pacific International School
- The Athenian School
- Cheshire Academy
- EF Academy New York
- Emma Willard School
- Flintridge Sacred Heart Academy
- Hawai’i Preparatory Academy
- Hebron Academy
- ‘Iolani School
- King’s Academy
- The Kiski School
- North Country School
- Oldfields School
- Oregon Episcopal School
- Ross School
- St. Stephen’s Episcopal School
- Stoneleigh-Burnham School
- Trinity-Pawling School
- UWC Changshu China
- Washington Academy
- Wyoming Seminary College Preparatory School