| Bible Baptist Christian Academy | 8.8 |
Regular elementary or secondary | 3-10 | 4 | 4.0 | Baptist |
| Chicago Futabakai Japanese School | 9.4 |
Regular elementary or secondary | 1-9 | 163 | 8.4 | Nonsectarian |
| Westlake Christian Academy | 9.6 |
Regular elementary or secondary | Pre-KG-12 | 153 | 6.9 | Christian (no specific denomination) |
| Christian Liberty Academy | 10.8 |
Regular elementary or secondary | Pre-KG-12 | 721 | 14.7 | Calvinist |
| Valeo Academy | 11.1 |
Regular elementary or secondary | KG-12 | 95 | 10.6 | Christian (no specific denomination) |
| J Slowacki School | 11.3 |
Regular elementary or secondary | Pre-KG-11 | 509 | 40.7 | Roman Catholic |
| Fox Valley Christian School | 11.7 |
Regular elementary or secondary | 2-12 | 15 | 7.5 | Baptist |
| Montessori School Of Lake Forest | 11.9 |
Montessori | Ungraded-Ungraded | 198 | 16.5 | Nonsectarian |
| Schaumburg Christian School | 12.6 |
Regular elementary or secondary | Pre-KG-12 | 1037 | 13.6 | Baptist |
| Summit School | 13.1 |
Special education | 1-12 | 94 | 5.2 | Nonsectarian |
| The Einstein Academy | 13.6 |
Special program emphasis | Pre-KG-12 | 121 | 6.9 | Nonsectarian |
| Centerview Therapeutic School | 14.0 |
Special education | Ungraded-Ungraded | 15 | 3.8 | Nonsectarian |
| Keshet Day School | 14.3 |
Special education | Ungraded-Ungraded | 41 | 5.9 | Jewish |
| Allendale School | 14.4 |
Special education | 2-12 | 243 | 7.2 | Nonsectarian |
| Madrasah Institute Of Islamic Education | 14.9 |
Regular elementary or secondary | 6-12 | 27 | 3.5 | Islamic |
| Brentwood Baptist Christian Academy | 15.3 |
Regular elementary or secondary | 1-12 | 72 | 5.1 | Baptist |
| Clare Woods Academy | 15.5 |
Special education | Ungraded-Ungraded | 109 | 5.2 | Nonsectarian |
| Harvest Christian Academy | 15.8 |
Regular elementary or secondary | Pre-KG-10 | 457 | 12.4 | Christian (no specific denomination) |
| Metropolitan Preparatory Schools | 15.8 |
Special education | KG-12 | 115 | 6.4 | Nonsectarian |
| The Willows Academy | 16.4 |
Regular elementary or secondary | 6-12 | 223 | 9.5 | Roman Catholic |
| Cove School | 16.5 |
Special education | 1-12 | 112 | 5.3 | Nonsectarian |
| Larkin Center School | 16.7 |
Special education | 5-12 | 57 | 5.7 | Nonsectarian |
| The Camelot School | 16.8 |
Special education | 2-12 | 72 | 7.2 | Nonsectarian |
| Science & Arts Academy | 17.1 |
Special program emphasis | Ungraded-Ungraded | 221 | 5.8 | Nonsectarian |
| Child S Voice School | 17.3 |
Special education | Ungraded-Ungraded | 42 | 3.2 | Nonsectarian |
| Westminster Christian School | 17.4 |
Regular elementary or secondary | Pre-KG-12 | 484 | 11.3 | Presbyterian |
| Marklund Day School | 18.0 |
Special education | Ungraded-Ungraded | 21 | 10.5 | Nonsectarian |
| Northridge Preparatory School | 18.6 |
Regular elementary or secondary | 6-12 | 283 | 13.4 | Roman Catholic |
| Jeanine Schultz Memorial School | 18.8 |
Special education | Ungraded-Ungraded | 15 | 5.0 | Nonsectarian |
| Lake County Baptist School | 19.5 |
Regular elementary or secondary | KG-12 | 168 | 12.5 | Baptist |
| St Bernadette's School For Special Children | 19.9 |
Special education | Pre-KG-12 | 13 | 1.4 | Roman Catholic |
| Lutherbrook Academy | 20.1 |
Special education | 2-12 | 76 | 9.5 | Lutheran Church - Missouri Synod |
| Arlyn Day School | 20.9 |
Special education | 5-12 | 37 | 5.7 | Nonsectarian |
| North Shore Country Day School | 21.5 |
Regular elementary or secondary | KG-12 | 490 | 6.4 | Nonsectarian |
| Norwood Park Christian School | 21.7 |
Regular elementary or secondary | Pre-KG-12 | 131 | 6.9 | Christian (no specific denomination) |
| Zion Christian School | 22.3 |
Regular elementary or secondary | Pre-KG-11 | 22 | 5.5 | Baptist |
| Montessori Academy Of Glen Ellyn | 22.3 |
Montessori | Ungraded-Ungraded | 110 | 42.3 | Nonsectarian |
| Parkview Baptist Academy | 23.4 |
Regular elementary or secondary | KG-11 | 68 | 9.3 | Baptist |
| College Preparatry School Of America | 23.8 |
Regular elementary or secondary | Pre-KG-12 | 430 | 13.8 | Nonsectarian |
| New Horizon Center | 24.1 |
Special education | Ungraded-Ungraded | 69 | 6.9 | Nonsectarian |
| Islamic Foundation School | 24.8 |
Regular elementary or secondary | Pre-KG-12 | 656 | 14.4 | Islamic |
| Roycemore School | 24.9 |
Regular elementary or secondary | Pre-KG-12 | 233 | 8.5 | Nonsectarian |
