Maths and Science Teacher Shortage Subjects in Canada: Which Ones Are Real
"Canada is desperate for teachers" is the kind of line that circulates in South African emigration Facebook groups with total confidence and almost no detail attached. What nobody adds is the part that actually matters: desperate for which teachers, in which subjects, in which places. If you teach maths or science, the honest answer is genuinely more encouraging than the generic version — but it's still a specific answer, not a blanket one.
The subjects where the shortage is real
Nationally, elementary teaching demand and supply are running close to balanced over the next decade — not the acute gap a generalist newcomer might expect. Maths and science teachers sit in a different category. The places where the research is confident real demand exists are French-language teaching, STEM subjects, special education, and rural or remote placements. If you teach high school maths or science, you're inside the one category of the profession where "Canada needs teachers" is closer to literally true than aspirational marketing.
Where it's worst, region by region
So where are teacher shortages worst in Canada? Ontario's shortage is projected to worsen into 2027 as retirements and enrolment both climb. Quebec has a reported gap of more than 8,000 teachers. Nova Scotia's shortage is specifically in substitute teachers, which matters if you're expecting to walk straight into a permanent contract rather than a supply roster. None of these numbers describe your specific school board or your specific city — they describe provincial and national patterns worth knowing before you assume any one location will be easy.
The certification steps aren't different because you teach STEM
We've covered the actual certification process — provincial regulators, country-specific documentation requirements, the OCT's South Africa page and its SACE letter, the near-default extra coursework many internationally trained teachers face — in a separate piece on Foundation Phase teachers. That process doesn't change because your subject is in higher demand. A shortage subject gets you a warmer reception once you're certified and job-hunting; it doesn't shorten the certification path itself.
The part worth saying plainly about French
Demand for French-language teachers is real and repeatedly named in this research as one of the strongest areas. Realistically, though, most South African teachers' French — if they have any at all — is unlikely to meet the standard needed for French-language or French-immersion teaching positions. It's worth naming that gap plainly rather than letting "French-language demand exists" read as an opportunity that applies to you by default.
What this means for where you look
If you're hunting science teacher jobs in Canada from South Africa, lean into your subject specifically when you're job-hunting rather than presenting as a generalist — the demand genuinely favours you there. And be willing to look at rural and remote placements, and at Quebec and Nova Scotia specifically, rather than defaulting to Toronto or Vancouver because that's where South Africans already know people. The shortage is real; it's just not evenly distributed, and pretending otherwise sets you up for a harder job search than your subject actually deserves.