Brunswick School
Greenwich Academy
Greenwich Country Day School
Greenwich High School
John Jay High School
Kent School
King School
The Masters School
Miss Porter's School
Northfield Mt. Hermon
The Peddie School
Rye Country Day School
Sacred Heart Greenwich
St. Luke’s School
Taft School
| Academy of Information, Technology & Engineering* | King School* |
| The Benjamin School | Laurel Springs School |
| Berkshire School* | Lawrenceville School |
| Blair Academy* | Loomis Chaffee School |
| Blind Brook High School | Marymount School of New York |
| Brighton College UK | The Masters School* |
| Brunswick School* | Mercersburg Academy |
| Byram Hills High School* | Middlesex School |
| Center for Global Studies | Milton Academy |
| Choate Rosemary Hall* | Miss Porter's School |
| Emma Willard School | Northfield Mount Hermon School |
| The Ethel Walker School | Northwood School |
| Fairfield College Preparatory School* | Notre Dame High School |
| Fiorello H. LaGuardia High School of Music & Art and Performing Arts | Openbaar Lyceum Zeist, Netherlands |
| Fordham Preparatory School | Oscar Romero College Belgium |
| Fox Lane High School | The Peddie School* |
| Greens Farms Academy* | Phillips Academy Andover* |
| Greenwich Academy* | Phillips Exeter Academy |
| Greenwich Country Day School* | Pomfret School |
| Greenwich High School* | Rye Country Day School* |
| Hackley School* | Rye High School |
| Harrison High School (International Baccalaureate World School) | Sacred Heart Greenwich* |
| The Harvey School* | Salisbury School |
| Hopkins School* | St. Luke’s School* |
| John Jay High School | St. Joseph's High School |
| Kent School | Taft School |
| Kimball Union Academy | Westminster |
| * Indicates multiple matriculations |
