| Benet Academy
| Lisle | IL | 9th-12th | none | Coed | 1290 | Roman Catholic |
| De La Salle Institute
| Chicago | IL | 9th-12th | none | Coed | 1215 | Roman Catholic |
| Fenwick High School
| Oak Park | IL | 9th-12th | none | Coed | 1152 | Roman Catholic |
| Francis W. Parker School
| Chicago | IL | PK-12th | none | Coed | 901 | None |
| Holy Trinity High School
| Chicago | IL | 9th-12th | none | Coed | 420 | Roman Catholic |
| Lake Forest Academy
| Lake Forest | IL | 9th-12th | 9th-12th | Coed | 321 | None |
| Latin School of Chicago
| Chicago | IL | PK-12th | none | Coed | 1105 | None |
| Loyola Academy
| Wilmette | IL | 9th-12th | none | Coed | 2000 | Roman Catholic |
| Marian Catholic High School
| Chicago Heights | IL | 9th-12th | none | Coed | 1550 | Roman Catholic |
| Montini Catholic High School
| Lombard | IL | 9th-12th | none | Coed | 653 | Roman Catholic |
| Mount Assisi Academy
| Lemont | IL | 9th-12th | none | Girls only | 315 | Roman Catholic |
| Notre Dame College Prep
| Niles | IL | 9th-12th | none | Boys only | 830 | Roman Catholic |
| Peoria Notre Dame High School
| Peoria | IL | 9th-12th | none | Coed | 815 | Roman Catholic |
| Queen of Peace High School
| Burbank | IL | 9th-12th | none | Girls only | 800 | Roman Catholic |
| Quincy Notre Dame High School
| Quincy | IL | 9th-12th | none | Coed | 500 | Roman Catholic |
| Southwest Chicago Christian Schools
| Palos Heights | IL | 9th-12th | none | Coed | 410 | Non-Denominational Christian |
| St. Francis High School
| Wheaton | IL | 9th-12th | none | Coed | 756 | Roman Catholic |
| St. Ignatius College Prep
3.6/5
based on 1 student review(s) | Chicago | IL | 9th-12th | none | Coed | 1321 | Roman Catholic |
| St. Patrick High School
| Chicago | IL | 9th-12th | none | Boys only | 961 | Roman Catholic |
| St. Scholastica Academy
| Chicago | IL | 9th-12th | none | Girls only | 290 | Roman Catholic |
| St. Viator High School
| Arlington Heights | IL | 9th-12th | none | Coed | 1090 | Roman Catholic |
| Trinity High School
| River Forest | IL | 9th-12th | none | Girls only | 484 | Roman Catholic |
| University of Chicago Laboratory Schools
4.6/5
based on 1 student review(s) | Chicago | IL | PK-12th | none | Coed | 1700 | None |
| Willows Academy
| Des Plaines | IL | 6th-12th | none | Girls only | 230 | Roman Catholic |