| Charleston Day School | 0.7 |
Regular elementary or secondary | 1-8 | 186 | 9.6 | Nonsectarian |
| Calvary Episcopal Day School | 1.0 |
Early childhood program/child care center | Pre-KG-KG | 3 | 3.0 | Episcopal |
| The Charleston Catholic School | 1.5 |
Regular elementary or secondary | Pre-KG-8 | 183 | 12.8 | Roman Catholic |
| New Israel Christian School | 1.9 |
Regular elementary or secondary | Pre-KG-3 | 26 | 4.4 | Episcopal |
| The O'quinn School | 2.0 |
Early childhood program/child care center | Pre-KG-KG | 42 | 7.2 | Nonsectarian |
| Blessed Sacrament School | 2.1 |
Regular elementary or secondary | Pre-KG-8 | 410 | 11.9 | Roman Catholic |
| Ashley River Child Development Center | 2.6 |
Early childhood program/child care center | Pre-KG-KG | 12 | 6.0 | Baptist |
| Charles Towne Montessori School | 3.4 |
Montessori | Pre-KG-5 | 40 | 10.0 | Nonsectarian |
| The O'quinn School - East Cooper | 3.6 |
Early childhood program/child care center | Pre-KG-KG | 32 | 10.3 | Nonsectarian |
| Nativity School | 3.9 |
Regular elementary or secondary | Pre-KG-8 | 128 | 11.6 | Roman Catholic |
| Westminster Presbyterian Preschool | 3.9 |
Early childhood program/child care center | Pre-KG-KG | 20 | 15.4 | Presbyterian |
| Trinity Montessori School | 3.9 |
Montessori | Pre-KG-8 | 44 | 8.8 | Christian (no specific denomination) |
| Mt Pleasant Presbyterian Church Learning Center | 4.1 |
Early childhood program/child care center | Pre-KG-KG | 14 | 23.3 | Presbyterian |
| Montessori Of Mt Pleasant | 4.2 |
Montessori | Pre-KG-KG | 18 | 9.0 | Nonsectarian |
| St Andrews Presbyterian Weekday School | 4.3 |
Early childhood program/child care center | Pre-KG-KG | 5 | 5.0 | Presbyterian |
| Christ Our King-stella Maris School | 5.1 |
Regular elementary or secondary | Pre-KG-8 | 687 | 20.5 | Roman Catholic |
| Owens Christian Academy | 5.7 |
Alternative/other | Pre-KG-1 | 14 | 4.8 | Christian (no specific denomination) |
| St John Catholic School | 6.2 |
Special program emphasis | 1-8 | 61 | 6.8 | Roman Catholic |
| Charleston Sda School | 6.2 |
Regular elementary or secondary | Pre-KG-8 | 30 | 10.0 | Seventh-Day Adventist |
| Wando Woods Baptist Church Kindergarten | 7.0 |
Early childhood program/child care center | Pre-KG-KG | 5 | 2.8 | Baptist |
| Charleston Christian School | 7.2 |
Regular elementary or secondary | Pre-KG-8 | 93 | 12.2 | Presbyterian |
| Divine Redeemer School | 10.4 |
Regular elementary or secondary | Pre-KG-8 | 153 | 13.5 | Roman Catholic |
| New Life Christian Academy | 15.9 |
Regular elementary or secondary | Pre-KG-4 | 10 | 2.2 | Christian (no specific denomination) |
| Crowfield Academy | 16.6 |
Montessori | KG-2 | 49 | 11.9 | Nonsectarian |
| Londonderry School | 17.6 |
Montessori | KG-KG | 16 | 16.0 | Presbyterian |
| Tiny Tots Tech | 20.5 |
Regular elementary or secondary | Pre-KG-1 | 11 | 11.0 | Nonsectarian |
| Summerville Catholic School | 20.6 |
Regular elementary or secondary | Pre-KG-8 | 303 | 11.3 | Roman Catholic |
| The Oaks Christian School | 20.7 |
Regular elementary or secondary | Pre-KG-8 | 132 | 9.0 | Christian (no specific denomination) |
| Bethany Child Development Center | 21.2 |
Early childhood program/child care center | Pre-KG-KG | 16 | 7.6 | Methodist |
| New Alpha Christian School | 21.5 |
Regular elementary or secondary | KG-6 | 37 | 7.7 | Baptist |
