Brunswick School
Byram Hills High School
Center for Global Studies
Fordham Preparatory School
Greenwich Country Day School
Greenwich High School
Hackley School
The Harvey School
King School
Northfield Mt. Hermon School
Notre Dame High School
Rye Country Day School
St. Joseph’s High School
St. Luke’s School
The Masters School
| Academy of Information, Technology & Engineering* | J.M. Wright Technical High School |
| American School of Paris | John Jay High School |
| The Benjamin School | Kildonan School |
| Berkshire School* | Kimball Union Academy |
| Blair Academy* | King School* |
| Blind Brook High School | Laurel Springs School |
| Brighton College UK | Lawrenceville School |
| Brunswick School* | Loomis Chaffee School |
| Byram Hills High School* | Marymount School of New York |
| Choate Rosemary Hall* | The Masters School* |
| Colégio Visconde de Porto Seguro | Mercersburg Academy |
| Columbus Academy | Middlesex School |
| Eastside Preparatory School | Milton Academy |
| Emma Willard School | New Fairfield High School |
| The Ethel Walker School | Northfield Mount Hermon School |
| Fairfield College Preparatory School* | Northwood School |
| Fiorello H. LaGuardia High School of Music & Art and Performing Arts | Notre Dame High School |
| Fordham Preparatory School | Openbaar Lyceum Zeist |
| Fox Lane High School | Oscar Romero College Belgium |
| Greens Farms Academy* | The Peddie School* |
| Greenwich Academy* | Phillips Academy Andover* |
| Greenwich Country Day School* | Phillips Exeter Academy |
| Greenwich High School* | Pomfret School |
| The Gunnery | Port Chester High School |
| Hackley School* | Rye Country Day School* |
| The Harvey School* | Rye High School |
| Het Amsterdams Lyceum | Sacred Heart Greenwich* |
| The Hewitt School | Salisbury School |
| Hopkins School* | St. Luke’s School* |
| International School of Curitiba | St. Joseph's High School |
| Harison High School (International Baccalaureate World School) | Westhill High School |
| International School of Krakow | Westminster |
| The Windward School | |
| * Indicates Multiple Matriculations |
