| Academia Cotopaxi (Ecuador) | Georgetown Preparatory School | Sandy Spring Friends |
| Albert Einstein High School (Visual Arts Magnet Program) | Holton-Arms School | School Without Walls |
| Barrie School | Indian Creek School | Sidwell Friends School |
| Bethesda-Chevy Chase High School | Jackson-Reed High School | St. Albans School |
| Bullis School | Landon School | St. Andrew’s Episcopal School |
| Duke Ellington High School | Madeira School | St. Anselm's Abbey School |
| Edmund Burke School | Maret School | St. John's College High School |
| Episcopal High School | McLean School | St. Timothy's School |
| Field School | Mercersburg Academy | Walt Whitman High School |
| Garrison Forest School | Montgomery Blair Magnet High School | Washington International School |
| Georgetown Day School | National Cathedral School |