| The O'quinn School | 2.1 |
42 | 100.0% | - | - | - | - |
| Mason Preparatory School | 3.9 |
339 | 97.1% | 0.6% | 1.5% | - | 0.9% |
| Blessed Sacrament School | 4.0 |
410 | 91.7% | 2.7% | 3.2% | - | 2.4% |
| Charleston Day School | 4.2 |
186 | 98.4% | - | 0.5% | - | 1.1% |
| Ashley River Child Development Center | 4.2 |
12 | 83.3% | - | 16.7% | - | - |
| Charles Towne Montessori School | 4.5 |
40 | 5.0% | 20.0% | 47.5% | - | 27.5% |
| Calvary Episcopal Day School | 4.9 |
3 | - | - | 66.7% | - | 33.3% |
| The Charleston Catholic School | 5.3 |
183 | 74.9% | 4.4% | 20.2% | - | 0.5% |
| St Andrews Presbyterian Weekday School | 5.4 |
5 | 80.0% | 20.0% | - | - | - |
| New Israel Christian School | 5.6 |
26 | - | - | 100.0% | - | - |
| Trinity Montessori School | 6.6 |
44 | 95.5% | 4.5% | - | - | - |
| Westminster Presbyterian Preschool | 6.8 |
20 | 100.0% | - | - | - | - |
| Charleston Sda School | 6.8 |
30 | 60.0% | 30.0% | 10.0% | - | - |
| Mt Pleasant Presbyterian Church Learning Center | 6.9 |
14 | 92.9% | - | - | - | 7.1% |
| The O'quinn School - East Cooper | 6.9 |
32 | 93.8% | - | - | - | 6.2% |
| Montessori Of Mt Pleasant | 6.9 |
18 | 88.9% | 5.6% | 5.6% | - | - |
| Christ Our King-stella Maris School | 7.8 |
687 | 96.7% | 2.2% | 0.6% | 0.4% | 0.1% |
| Charleston Christian School | 9.0 |
93 | 94.6% | 2.2% | 3.2% | - | - |
| Owens Christian Academy | 9.2 |
14 | - | - | 100.0% | - | - |
| Wando Woods Baptist Church Kindergarten | 9.5 |
5 | 80.0% | - | 20.0% | - | - |
| St John Catholic School | 9.7 |
61 | 72.1% | 6.6% | 18.0% | - | 3.3% |
| Divine Redeemer School | 13.6 |
153 | 59.5% | 19.6% | 4.6% | - | 16.3% |
| New Life Christian Academy | 19.2 |
10 | 10.0% | - | 90.0% | - | - |
| Crowfield Academy | 19.7 |
49 | 49.0% | 10.2% | 40.8% | - | - |
| Londonderry School | 20.7 |
16 | 100.0% | - | - | - | - |
| Summerville Catholic School | 22.9 |
303 | 85.5% | 10.2% | 1.3% | - | 3.0% |
| The Oaks Christian School | 23.0 |
132 | 87.9% | - | 9.8% | - | 2.3% |
| Tiny Tots Tech | 23.1 |
11 | 45.5% | - | 54.5% | - | - |
| Bethany Child Development Center | 23.5 |
16 | 100.0% | - | - | - | - |
| New Alpha Christian School | 23.7 |
37 | - | - | 100.0% | - | - |
