| School | State | Tuition | Students | International Students | SAT | Type and Grade |
|---|---|---|---|---|---|---|
| The Greenwich Japanese School | -- | 148 | -- | -- | Grades 1-9 | |
| Grove School | -- | 110 | -- | -- | Grades 7-12 | |
| Hebrew High School Of New England | $19,894 | 64 | -- | -- | Grades 9-12 | |
| Holy Cross High School | $18,415 | 450 | 8% | 1042 | 9-12 | |
| Immaculate High School | $26,000 | 385 | 10% | 1177 | 9-12 | |
| Intensive Education Academy In | -- | -- | -- | -- | Grades 3 - 12 | |
| King School | $57,510 | 697 | 4% | 1285 | PreK-12 | |
| Kingswood Oxford School | $53,250 | 507 | 18% | 1360 | 6-12 | |
| Kolbe Cathedral High School | $7,950 | 325 | -- | -- | Grades 9-12 | |
| Northwest Catholic High School | $17,000 | 514 | 3% | 1119 | 9-12 | |
| Notre Dame Catholic High School | $18,000 | 500 | -- | 1110 | 9-12 | |
| Oak Hill School-CT | -- | 75 | -- | -- | Grades Prekindergarten - Prekindergarten | |
| Parkway Christian Academy Happy Time Nursery | -- | 83 | -- | -- | PreK-6 | |
| Raymond Hill School | -- | 70 | -- | -- | Grades Kindergarten-12 | |
| Renbrook School | $34,500 | 347 | -- | -- | Nursery-8 | |
| Sacred Heart Academy Of Stamford | -- | 119 | -- | -- | Grades 9-12 | |
| St. Francis Home For Children | -- | 37 | -- | -- | Grades 1-12 | |
| St. Francis Of Assisi Middle School | -- | 111 | -- | -- | Grades 6-8 | |
| St. John The Evangelist | -- | 170 | -- | -- | K-8 | |
| St. Paul Catholic High School | $12,975 | 380 | 10% | 1097 | 9-12 |