Andrean High School
| Merrillville |
| Aquinas School at St. Andrews | Merrillville |
| Bethesda Christian School | Brownsburg |
| Bishop Noll Institute | Hammond |
| Brebeuf Jesuit Preparatory School | Indianapolis |
| Burge Terrace Christian School | Indianapolis |
| Calumet Christian School | Griffith |
| Canterbury School, Inc. | Fort Wayne |
| Central Christian Academy | Indianapolis |
| Chapel Hill Christian School | Indianapolis |
| Christian Academy of Indiana | New Albany |
| Christian Academy of Madison | Madison |
| Clear Creek Christian | Bloomington |
| Colonial Christian School | Indianapolis |
| Community Baptist Christian School | South Bend |
| Coram Deo Academy | Carmel |
| Covenant Christian High School | Indianapolis |
| Covenant Christian School (Bloomington) | Bloomington |
| Covington Christian School | Covington |
| Crosspointe Christian Academy | Indianapolis |
| Dana Christian School | Dana |
| Emmanuel Baptist Academy | Valparaiso |
| Fishers Christian Academy | Fishers |
| Fortune Academy | Indianapolis |
| Gateway Woods | Leo |
| Grace Baptist Christian School | Plymouth |
| Grace Christian Academy | Scottsburg |
| Greenwood Christian Academy | Greenwood |
| Hagia Sophia Classical Academy | Indianapolis |
| Harmony School | Bloomington |
| Heritage Christian School | Indianapolis |
| Heritage Hall Christian School | Muncie |
| Independence Academy | Indianapolis |
| Indiana Christian Academy | Anderson |
| Kingsway Christian School | Avon |
| La Lumiere School | La Porte |
| Lakeland Christian Academy | Winona Lake |
| Legacy Christian School | Noblesville |
| Liberty Christian School | Anderson |
| Lighthouse Christian Academy | Bloomington |
| Marquette Catholic High School | Michigan City |
| Michiana Christian Academy | South Bend |
| Mooresville Christian Academy | Mooresville |
| Morning Star Academy | Hammond |
| Nativity of our Savior School | Portage |
| Notre Dame Elementary School | Michigan City |
| Oak Farm Montessori School | Avilla |
| Oaks Academy | Indianapolis |
| Orchard School | Indianapolis |
| Our Lady of Grace | Highland |
| Portage Christian School | Portage |
| Queen of All Saints | Michigan City |
| Saint Paul Catholic School | Valparaiso |
| School for Community Learning | Indianapolis |
| St. Casimir School | Hammond |
| St. John Bosco | Hammond |
| St. John the Baptist | Whiting |
| St. John the Evangelist | St. John |
| St. Mary School | Griffith |
| St. Michael School | Schererville |
| St. Patrick School | Chesterton |
| St. Stanislaus (E. Chicago) | East Chicago |
| St. Stanislaus Kostka School | Michigan City |
| St. Thomas More School | Munster |
| Suburban Christian School | Indianapolis |
| The Montessori Academy Edison Lakes | Mishawaka |
| Traders Point Christian Schools | Whitestown |
| Trinity School at Greenlawn | South Bend |
| Turning Point School | Indianapolis |
| Union Bible Academy | Westfield |
| University High School of Indiana, Inc. | Carmel |
