
Start from an unusual premise: the default answer is free. Unlike every Gulf, Asian or European market on this site, Toronto does not ask expat families to buy their way into decent schooling. Ontario’s publicly funded schools charge no tuition to any child aged 5-18 — explicitly including the children of work-permit and study-permit holders — and the system they enter is, by any honest global comparison, a good one. ↗
That reframes the whole search. The question is not “which international school” — Toronto barely has an international-school sector in the Gulf sense. The question is a three-way fork:
- Public (TDSB) — free, catchment-by-address, with French immersion, public IB and alternative schools layered on top. The right answer for most families, most of the time.
- Catholic (TCDSB) — also free and publicly funded, but with a Catholicity test at elementary and open access at secondary. A real option for Catholic families; a high-school-only option for everyone else.
- Independent — CAD 25,000-48,000 a year for day students at the established schools, bought for selectivity, single-sex settings, guaranteed bilingual or IB-continuum programs, smaller classes, or boarding. Worth it in specific situations — and a poor default.
What actually tips families into the independent tier in Toronto is rarely curriculum — the public OSSD is a strong credential and IB exists inside the public system. It is usually one of four things: an exceptional child who wants the most selective peer group in the country (that is what UTS is for), a program the public system cannot guarantee at your address (full bilingual French-English at TFS, a guaranteed all-through IB at The York School), a single-sex or boarding preference, or a child whose learning needs outrun what a stretched public board can staff at your catchment school.