| Fairfield Country Day School | 2.8 |
Regular elementary or secondary | KG-9 | 271 | 6.6 | Nonsectarian |
| Phoenix Academy | 4.0 |
Regular elementary or secondary | Pre-KG-9 | 89 | 6.3 | Nonsectarian |
| Giant Steps Connecticut | 4.0 |
Special education | KG-12 | 39 | 6.4 | Nonsectarian |
| Christian Heritage School | 4.5 |
Regular elementary or secondary | KG-12 | 528 | 11.5 | Christian (no specific denomination) |
| Eagle Hill - Southport | 4.9 |
Special education | Ungraded-Ungraded | 111 | 3.9 | Nonsectarian |
| St Vincent's Special Needs Services | 6.2 |
Special education | Ungraded-Ungraded | 64 | 5.7 | Nonsectarian |
| Greens Farms Academy | 6.6 |
Regular elementary or secondary | KG-12 | 624 | 8.1 | Nonsectarian |
| Pierrepont School | 7.7 |
Regular elementary or secondary | KG-10 | 45 | 2.6 | Nonsectarian |
| St Dominic's Academy | 8.4 |
Regular elementary or secondary | KG-12 | 20 | 5.0 | Roman Catholic |
| Cccd - Connecticut Center For Child Development | 9.3 |
Special education | Pre-KG-12 | 42 | 6.0 | Nonsectarian |
| Boys And Girls Village Day School | 9.8 |
Special education | 2-9 | 27 | 6.8 | Nonsectarian |
| Berean Christian Academy | 12.6 |
Regular elementary or secondary | KG-12 | 81 | 6.2 | Christian (no specific denomination) |
| Hope Academy | 13.7 |
Special education | 2-12 | 25 | 4.2 | Nonsectarian |
| Southern Connecticut Hebrew Academy | 14.5 |
Special program emphasis | Pre-KG-12 | 165 | 11.9 | Jewish |
| New Canaan Country School | 14.8 |
Regular elementary or secondary | Pre-KG-9 | 565 | 5.9 | Nonsectarian |
| Living Word Christian Academy | 15.3 |
Regular elementary or secondary | Pre-KG-12 | 159 | 9.1 | Christian (no specific denomination) |
| Villa Maria Education Center | 16.1 |
Special education | KG-9 | 71 | 3.3 | Roman Catholic |
| Wooster School | 17.0 |
Regular elementary or secondary | KG-12 | 343 | 6.4 | Episcopal |
| Children's Community Programs Of Ct | 17.7 |
Alternative/other | 3-12 | 78 | 4.1 | Nonsectarian |
| Yeshiva Of New Haven / The Gan School | 17.9 |
Special program emphasis | Pre-KG-12 | 39 | 2.6 | Jewish |
| Colonial Hills Christian Academy | 18.4 |
Regular elementary or secondary | Pre-KG-9 | 60 | 7.1 | Baptist |
| Foote School | 19.4 |
Regular elementary or secondary | KG-9 | 466 | 8.7 | Nonsectarian |
| The Stanwich School | 20.3 |
Regular elementary or secondary | Pre-KG-9 | 432 | 10.3 | Nonsectarian |
| Whitney Hall School | 20.5 |
Special education | 3-12 | 90 | 6.0 | Nonsectarian |
| The Greenwich Japanese School | 22.1 |
Regular elementary or secondary | 1-9 | 180 | 7.0 | Nonsectarian |
| Greenwich Academy | 22.3 |
Regular elementary or secondary | Pre-KG-12 | 772 | 8.1 | Nonsectarian |
| Brunswick School | 22.4 |
Regular elementary or secondary | Pre-KG-12 | 861 | 5.6 | Nonsectarian |
| Faith Academy | 22.6 |
Regular elementary or secondary | Pre-KG-12 | 177 | 13.6 | Christian (no specific denomination) |
| Eagle Hill School | 23.3 |
Special education | Ungraded-Ungraded | 230 | 3.1 | Nonsectarian |
| Elizabeth Ives School For Special Children | 23.6 |
Special education | 4-11 | 15 | 3.8 | Nonsectarian |
