| Academy of the Holy Cross
| Kensington | MD | 9th-12th | none | Girls only | 555 | Roman Catholic |
| Barrie School
| Silver Spring | MD | PK-12th | none | Coed | 375 | None |
| Bishop Ireton High School
| Alexandria | VA | 9th-12th | none | Coed | 806 | Roman Catholic |
| Bishop McNamara High School
| Forestville | MD | 9th-12th | none | Coed | 871 | Roman Catholic |
| Bullis School
| Potomac | MD | K-12th | none | Coed | 828 | None |
| Chapelgate Christian Academy
| Marriottsville | MD | 6th-12th | none | Coed | 400 | Presbyterian |
| Charles E. Smith Jewish Day School
| Rockville | MD | K-12th | none | Coed | 1514 | Jewish |
| Connelly School of the Holy Child
| Potomac | MD | 6th-12th | none | Girls only | 382 | Roman Catholic |
| DeMatha Catholic High School
| Hyattsville | MD | 9th-12th | none | Boys only | 1012 | Roman Catholic |
| Episcopal High School
| Alexandria | VA | none | 9th-12th | Coed | 444 | Episcopal |
| Field School
| Washington | DC | 7th-12th | none | Coed | 320 | None |
| Georgetown Day School
4.9/5
based on 2 student review(s) | Washington | DC | PK-12th | none | Coed | 1030 | None |
| Georgetown Preparatory School
4.8/5
based on 1 student review(s) | North Bethesda | MD | 9th-12th | 9th-12th | Boys only | 480 | Roman Catholic (Jesuit) |
| Georgetown Visitation Preparatory School
5/5
based on 1 student review(s) | Washington | DC | 9th-12th | none | Girls only | 484 | Roman Catholic |
| Glenelg Country School
| Ellicott City | MD | PK-12th | none | Coed | 806 | None |
| Gonzaga College High School
4.8/5
based on 1 student review(s) | Washington | DC | 9th-12th | none | Boys only | 930 | Roman Catholic (Jesuit) |
| Grace Brethren Christian School
| Clinton | MD | PK-12th | none | Coed | 648 | Non-Denominational Christian |
| Heights School
| Potomac | MD | 3rd-12th | none | Boys only | 458 | Roman Catholic |
| Holton-Arms School
| Bethesda | MD | 3rd-12th | none | Girls only | 645 | None |
| Indian Creek School
| Crownsville | MD | PK-12th | none | Coed | 633 | None |
| Landon School
4.4/5
based on 3 student review(s) | Bethesda | MD | 3rd-12th | none | Boys only | 679 | None |
| Madeira School
| McLean | VA | 9th-12th | 9th-12th | Girls only | 318 | None |
| Maret School
4.2/5
based on 2 student review(s) | Washington | DC | K-12th | none | Coed | 600 | None |
| McLean School
| Potomac | MD | K-12th | none | Coed | 472 | None |
| National Cathedral School
3.6/5
based on 1 student review(s) | Washington | DC | 4th-12th | none | Girls only | 580 | Episcopal |
| Our Lady of Good Counsel High School
| Olney | MD | 9th-12th | none | Coed | 1283 | Roman Catholic |
| Potomac School
4.8/5
based on 1 student review(s) | McLean | VA | K-12th | none | Coed | 900 | None |
| Riverdale Baptist School
| Upper Marlboro | MD | PK-12th | none | Coed | 758 | Baptist |
| Sandy Spring Friends School
| Sandy Spring | MD | PK-12th | 9th-12th | Coed | 561 | Quakers/Friends |
| Sidwell Friends School
4.2/5
based on 2 student review(s) | Washington | DC | PK-12th | none | Coed | 1100 | Quakers/Friends |
| Spencerville Adventist Academy
| Silver Spring | MD | PK-12th | none | Coed | 283 | Adventists |
| St. Albans School
4.6/5
based on 1 student review(s) | Washington | DC | 4th-12th | 9th-12th | Boys only | 575 | Episcopal |
| St. Andrew's Episcopal School
| Potomac | MD | PK-12th | none | Coed | 528 | Episcopal |
| St. Stephen's and St. Agnes School
4.6/5
based on 1 student review(s) | Alexandria | VA | PK-12th | none | Coed | 1150 | Episcopal |
| Takoma Academy
| Takoma Park | MD | 9th-12th | none | Coed | 228 | Adventists |
| Washington International School
| Washington | DC | PK-12th | none | Coed | 890 | None |
| Woodstream Christian Academy
| Mitchellville | MD | K-12th | none | Coed | 400 | Non-Denominational Christian |