There is no current Ontario government proposal to fund private schools. Proposals do exist from policy organizations, and they frequently begin with students who have special education needs, but none has become policy and no party platform in 2018, 2022 or 2025 committed to one.
The more immediate point for families is that funding is not the only thing missing at a private school. There is no IPRC, no requirement to write an Individual Education Plan, no Special Education Advisory Committee, and no appeal to the Ontario Special Education Tribunal. The Ontario Human Rights Code does still apply, because a private school provides a service, so disability discrimination remains actionable at the Human Rights Tribunal of Ontario.
This page is general information about how Ontario law is structured. It is not legal advice, and it is not a comment on any particular school or case. For advice on your own situation, contact the Human Rights Legal Support Centre or ARCH Disability Law Centre.