| St Thomas More Academy | 0.0 |
Regular elementary or secondary | Pre-KG-8 | 132 | 10.3 | Roman Catholic |
| Trinity School Of Frederick | 3.4 |
Regular elementary or secondary | KG-8 | 93 | 7.7 | Episcopal |
| Frederick Adventist School | 4.5 |
Regular elementary or secondary | KG-8 | 78 | 12.4 | Seventh-Day Adventist |
| Calvary Weekday School | 5.4 |
Early childhood program/child care center | Pre-KG-KG | 18 | 4.7 | Methodist |
| Visitation Academy | 5.5 |
Regular elementary or secondary | Pre-KG-8 | 109 | 6.4 | Roman Catholic |
| Church Of The Brethren Learning Center | 5.7 |
Early childhood program/child care center | Pre-KG-KG | 15 | 15.0 | Brethren |
| The Banner School | 7.0 |
Regular elementary or secondary | KG-8 | 203 | 8.2 | Nonsectarian |
| The Goddard School Of Frederick | 7.1 |
Early childhood program/child care center | Pre-KG-KG | 15 | 15.0 | Nonsectarian |
| Middletown United Methodist Church Preschool And | 7.6 |
Early childhood program/child care center | Pre-KG-KG | 28 | 17.5 | Methodist |
| Friends Meeting School | 8.0 |
Regular elementary or secondary | Pre-KG-8 | 82 | 6.9 | Friends |
| Frederick Country Day Montessori School | 8.2 |
Montessori | Pre-KG-KG | 11 | 0.7 | Nonsectarian |
| St John Regional Catholic School | 8.6 |
Regular elementary or secondary | Pre-KG-8 | 590 | 16.6 | Roman Catholic |
| Lucy School | 13.1 |
Special program emphasis | Pre-KG-2 | 27 | 10.8 | Nonsectarian |
| Little Travelers Daycare & Learning Center | 13.7 |
Early childhood program/child care center | Pre-KG-Trans. KG | 10 | 10.0 | Nonsectarian |
| Energy Child Development Center | 14.2 |
Early childhood program/child care center | Pre-KG-KG | 4 | 2.0 | Nonsectarian |
| Covenant Christian School | 15.5 |
Regular elementary or secondary | Pre-KG-1 | 11 | 1.6 | Christian (no specific denomination) |
| Disregard, Address Is Correct | 16.6 |
Regular elementary or secondary | KG-8 | 217 | 14.4 | Roman Catholic |
| Butler School | 16.9 |
Montessori | Pre-KG-8 | 109 | 10.3 | Nonsectarian |
| Seneca Academy | 17.2 |
Regular elementary or secondary | Pre-KG-8 | 96 | 10.1 | Nonsectarian |
| Village Montessori School Inc | 17.2 |
Montessori | Pre-KG-2 | 33 | 4.7 | Nonsectarian |
| Nist Child Care Center | 17.7 |
Early childhood program/child care center | Pre-KG-KG | 8 | 8.0 | Nonsectarian |
| Mary Of Nazareth School | 18.0 |
Regular elementary or secondary | KG-8 | 497 | 11.5 | Roman Catholic |
| Georgetown Hill Early School | 18.1 |
Early childhood program/child care center | Trans. KG-Trans. KG | 6 | 6.0 | Nonsectarian |
| Quality Care Nursery & Day School | 18.3 |
Special program emphasis | Pre-KG-1 | 14 | 3.5 | Nonsectarian |
| Ets Chaiyim School | 18.4 |
Regular elementary or secondary | KG-6 | 45 | 9.4 | Jewish |
| St Martin's School | 18.7 |
Regular elementary or secondary | KG-8 | 237 | 11.4 | Roman Catholic |
| The Jefferson School | 18.7 |
Montessori | Pre-KG-KG | 80 | 8.0 | Nonsectarian |
| Church Of The Redeemer Christian School | 18.8 |
Regular elementary or secondary | Pre-KG-8 | 204 | 16.4 | Christian (no specific denomination) |
| Gaithersburg Presbyterian Preschool & Kdgn | 19.4 |
Early childhood program/child care center | Pre-KG-KG | 20 | 20.0 | Presbyterian |
| Epworth Preschool And Kindergarten | 19.6 |
Early childhood program/child care center | Pre-KG-KG | 16 | 16.0 | Methodist |
| Mt Aetna Adventist Elementary School | 19.9 |
Regular elementary or secondary | Pre-KG-8 | 75 | 11.9 | Seventh-Day Adventist |
| The Franklin Schools | 20.1 |
Montessori | Pre-KG-KG | 33 | 3.0 | Nonsectarian |
| Primary Montessori Day School | 20.9 |
Montessori | Pre-KG-2 | 49 | 5.0 | Nonsectarian |
| Shiningtree School | 21.1 |
Regular elementary or secondary | 6-8 | 11 | 5.5 | Nonsectarian |
| Glenwood Country Day School | 21.6 |
Regular elementary or secondary | 1-3 | 22 | 11.0 | Nonsectarian |
| Glenwood Country Day School | 21.6 |
Regular elementary or secondary | Pre-KG-4 | 49 | 12.2 | Nonsectarian |
| Georgetown Hill Early School | 21.9 |
Early childhood program/child care center | Pre-KG-KG | 5 | 5.0 | Nonsectarian |
| Olney Adventist Preparatory | 22.5 |
Regular elementary or secondary | KG-8 | 133 | 11.0 | Seventh-Day Adventist |
| Camp Olympia Country Day School | 22.8 |
Early childhood program/child care center | Pre-KG-Trans. KG | 2 | 1.4 | Nonsectarian |
| Woodmont Academy | 22.9 |
Regular elementary or secondary | Pre-KG-8 | 285 | 12.4 | Roman Catholic |
| Christ Episcopal School | 23.1 |
Regular elementary or secondary | Pre-KG-8 | 154 | 7.3 | Episcopal |
| St John's Episcopal School | 23.3 |
Regular elementary or secondary | KG-8 | 314 | 8.1 | Episcopal |
| The Julia Brown Montessori Schools | 23.5 |
Montessori | Pre-KG-3 | 85 | 14.4 | Nonsectarian |
| St Marys Elem School | 23.6 |
Regular elementary or secondary | Pre-KG-8 | 248 | 15.7 | Roman Catholic |
| St Peter's School | 23.8 |
Regular elementary or secondary | KG-8 | 447 | 15.3 | Roman Catholic |
| Washington Hebrew Congregation Rjw Ecc | 23.9 |
Regular elementary or secondary | Pre-KG-2 | 58 | 29.0 | Jewish |
| Norbeck Montessori Center | 24.1 |
Montessori | Pre-KG-KG | 18 | 9.0 | Nonsectarian |
| The Fourth Presbyterian School | 24.3 |
Regular elementary or secondary | Pre-KG-5 | 91 | 8.6 | Presbyterian |
| Geneva Day School | 24.4 |
Early childhood program/child care center | Pre-KG-KG | 15 | 3.8 | Nonsectarian |
| Good Shepherd Montessori School | 24.5 |
Montessori | Pre-KG-1 | 7 | 4.4 | Nonsectarian |
| St James' Children's School | 24.6 |
Early childhood program/child care center | Pre-KG-KG | 14 | 9.3 | Episcopal |
| Aleem Academy | 24.7 |
Regular elementary or secondary | Pre-KG-5 | 14 | 3.2 | Islamic |
| Potomac Glen Day School | 24.8 |
Alternative/other | Pre-KG-Trans. KG | 23 | 11.5 | Christian (no specific denomination) |
| Ivymount School | 24.9 |
Special education | 2-7 | 212 | 9.2 | Nonsectarian |
