Student Grade 9-12, PG
| SCHOOLS | SCHOOL TYPE | STUDENT POPULATION | ESL | CITY | STATE / PROVINCE |
|---|---|---|---|---|---|
| Besant Hill School | Boarding School | Co-educational | Yes | Upper Ojai, (Los Angeles) | California |
| Gould Academy | Boarding School | Co-educational | No | Bethel, (Portland) | Maine |
| Hyde School - Maine | Boarding School | Co-educational | Yes | Bath | Maine |
| Hyde School - Woodstock | Boarding School | Co-educational | Yes | Woodstock, (Hartford) | Connecticut |
| Idyllwild Arts Academy | Boarding School | Co-educational | Yes | Idyllwild, (Los Angeles) | California |
| Lee Academy | Boarding School | Co-educational | Yes | Lee | Maine |
| Northwood School | Boarding School | Co-educational | Yes | Lake Placid | New York |
| South Kent School | Boarding School | All-boys | Yes | Kent | Connecticut |
| Washington Academy | Boarding School | Co-educational | Yes | East Machias | Maine |