| 4 | Ashbury College | Ottawa | Site based only | Conference of Independent Schools of Ontario | Visit |
| 15 | Heritage Academy | Ottawa | Site based only | Ontario Federation of Independent Schools | Visit |
| 34 | R.I.S.E. Academy | Ottawa | Online/Site Based | Ontario Federation of Independent Schools | Visit |
| 57 | The Element | Ottawa | Site based only | Canadian Council of Montessori Administrators (CCMA) | Visit |
| 80 | Elmwood School | Ottawa | Online/Site Based | IB Schools of Ontario | Visit |
| 139 | Abraar | Ottawa | Site based only | No Association Membership | Visit |
| 146 | Académie de la Capitale | Ottawa | Site based only | Other | Visit |
| 159 | Ahlul Bayt Islamic School | Ottawa | Site based only | No Association Membership | Visit |
| 187 | ARC Studio School | Ottawa | Site based only | No Association Membership | Visit |
| 191 | Ashwood International Collegiate | ottawa | Online/Site Based | No Association Membership | — |
| 194 | Astolot Education Centre | Ottawa | Site based only | No Association Membership | Visit |
| 222 | Blyth Academy Online | Ottawa | Online Only | No Association Membership | — |
| 224 | Blyth Academy The Glebe | Ottawa | Site based only | No Association Membership | Visit |
| 244 | Bytown Brigantine Academy | Ottawa | Site based only | Other | Visit |
| 270 | Canada Knowledge Academy | Ottawa | Online/Site Based | No Association Membership | Visit |
| 304 | Chesterton Academy of Ottawa | Ottawa | Site based only | Other | Visit |
| 336 | Debbie Campbell Learning Academy | Ottawa | Site based only | No Association Membership | — |
| 375 | Faculty of Engineering Secondary School | Ottawa | Online/Site Based | No Association Membership | Visit |
| 387 | Freedom High School | Ottawa | Online Only | No Association Membership | Visit |
| 478 | KAI Global School | Ottawa | Online/Site Based | No Association Membership | Visit |
| 479 | Kanata Academy | Ottawa | Online/Site Based | No Association Membership | Visit |
| 509 | Le Cercle des savoirs | Ottawa | Online/Site Based | No Association Membership | — |
| 521 | Lycée Claudel | Ottawa | Site based only | No Association Membership | Visit |
| 687 | Revel Academy | Ottawa | Site based only | Other | Visit |
| 709 | Sauder Academy | Ottawa | Online Only | No Association Membership | Visit |
| 735 | St. Laurent Academy | Ottawa | Site based only | No Association Membership | Visit |
| 755 | The Dandelion Cafe and Student Achievement Centre | Ottawa | Online/Site Based | No Association Membership | Visit |
| 768 | Torah Academy/Yeshiva HS of Ottawa | Ottawa | Site based only | No Association Membership | Visit |
| 773 | Torah High Ottawa | Ottawa | Site based only | Other | — |
| 880 | École lbn Batouta | Ottawa | Online/Site Based | No Association Membership | Visit |
| 882 | École Sainte-Marie Mère de Dieu | Ottawa | Online/Site Based | No Association Membership | Visit |