| 54 | Ridley College | St Catharines | Online/Site Based | Conference of Independent Schools of Ontario | Visit |
| 149 | Wheatley School of Montessori Education | St Catharines | Site based only | Canadian Council of Montessori Administrators (CCMA) | Visit |
| 166 | Beacon Christian Elementary School | St Catharines | Site based only | EDVance | Visit |
| 238 | MAC Niagara Islamic School | St. Catharines | Site based only | Muslim Association of Canada | Visit |
| 336 | Agate Private School | St. Catharines | Online/Site Based | No Association Membership | Visit |
| 429 | Beyond Montessori School Inc | St. Catharines | Site based only | No Association Membership | Visit |
| 472 | Calvary Christian School | St Catharines | Site based only | Other | Visit |
| 578 | EduNaissance Academy | St. Catharines | Online Only | No Association Membership | Visit |
| 1075 | St. Joseph Academy | St. Catharines | Site based only | No Association Membership | Visit |