| Academy of Our Lady of Mercy
| Milford | CT | 9th-12th | none | Girls only | 440 | Roman Catholic |
| Convent of the Sacred Heart
| Greenwich | CT | PK-12th | none | Girls only | 748 | Roman Catholic |
| Ethel Walker School 4.6/5 based on 1 student review(s) | Simsbury | CT | 6th-12th | 9th-12th | Girls only | 269 | None |
| Greenwich Academy
| Greenwich | CT | PK-12th | none | Girls only | 802 | None |
| Mercy High School
| Middletown | CT | 9th-12th | none | Girls only | 700 | Roman Catholic |
| Miss Porter's School 4.1/5 based on 4 student review(s) | Farmington | CT | 9th-12th | 9th-12th | Girls only | 333 | None |
| Sacred Heart Academy
| Hamden | CT | 9th-12th | none | Girls only | 495 | Roman Catholic |
| Westover School
| Middlebury | CT | 9th-12th | 9th-12th | Girls only | 193 | None |