| Mooseheart School | 3.2 |
Regular elementary or secondary | Pre-KG-12 | 208 | 5.7 | Nonsectarian |
| Camelot Schools Llc | 8.7 |
Special education | 4-12 | 91 | 3.7 | Nonsectarian |
| Carmel Montessori Academy And Children's House | 9.0 |
Montessori | Ungraded-Ungraded | 51 | 5.0 | Nonsectarian |
| Larkin Center School | 16.3 |
Special education | 5-12 | 57 | 5.7 | Nonsectarian |
| Clare Woods Academy | 16.8 |
Special education | Ungraded-Ungraded | 109 | 5.2 | Nonsectarian |
| Madrasah Institute Of Islamic Education | 17.2 |
Regular elementary or secondary | 6-12 | 27 | 3.5 | Islamic |
| Montessori Academy Of Glen Ellyn | 17.4 |
Montessori | Ungraded-Ungraded | 110 | 42.3 | Nonsectarian |
| Harvest Christian Academy | 18.4 |
Regular elementary or secondary | Pre-KG-10 | 457 | 12.4 | Christian (no specific denomination) |
| Crest Hill Christian School | 18.6 |
Regular elementary or secondary | KG-9 | 33 | 9.2 | Seventh-Day Adventist |
| College Preparatry School Of America | 18.8 |
Regular elementary or secondary | Pre-KG-12 | 430 | 13.8 | Nonsectarian |
| The Power Think Academy | 19.2 |
Regular elementary or secondary | 1-12 | 10 | 5.0 | Nonsectarian |
| Marklund Day School | 19.3 |
Special education | Ungraded-Ungraded | 21 | 10.5 | Nonsectarian |
| Westminster Christian School | 19.4 |
Regular elementary or secondary | Pre-KG-12 | 484 | 11.3 | Presbyterian |
| The Einstein Academy | 19.7 |
Special program emphasis | Pre-KG-12 | 121 | 6.9 | Nonsectarian |
| Marquette Manor Baptist Academy | 19.7 |
Regular elementary or secondary | Pre-KG-12 | 240 | 15.7 | Baptist |
| Summit School | 19.8 |
Special education | 1-12 | 94 | 5.2 | Nonsectarian |
| Islamic Foundation School | 20.7 |
Regular elementary or secondary | Pre-KG-12 | 656 | 14.4 | Islamic |
| Valeo Academy | 21.0 |
Regular elementary or secondary | KG-12 | 95 | 10.6 | Christian (no specific denomination) |
| Camolot Schools-dekalb Campus | 21.8 |
Special education | KG-12 | 75 | 5.5 | Nonsectarian |
| Lutherbrook Academy | 21.8 |
Special education | 2-12 | 76 | 9.5 | Lutheran Church - Missouri Synod |
| Cornerstone Christian Academy | 21.9 |
Regular elementary or secondary | Pre-KG-12 | 281 | 13.2 | Christian (no specific denomination) |
| Schaumburg Christian School | 22.5 |
Regular elementary or secondary | Pre-KG-12 | 1037 | 13.6 | Baptist |
| Giant Steps Illinois | 22.6 |
Special education | 2-12 | 39 | 1.9 | Nonsectarian |
| Ucp Reedswood School | 23.1 |
Special education | Ungraded-Ungraded | 58 | 9.7 | Nonsectarian |
| Hinsdale Adventist Academy | 23.5 |
Regular elementary or secondary | Pre-KG-12 | 216 | 12.0 | Seventh-Day Adventist |
| Child S Voice School | 24.0 |
Special education | Ungraded-Ungraded | 42 | 3.2 | Nonsectarian |
| Bible Baptist Christian Academy | 24.6 |
Regular elementary or secondary | 3-10 | 4 | 4.0 | Baptist |
| Acacia Academy | 25.0 |
Special education | Pre-KG-12 | 101 | 7.2 | Nonsectarian |
| Ridgewood Baptist Academy | 25.0 |
Regular elementary or secondary | Pre-KG-12 | 206 | 13.7 | Baptist |
