St Mary Catholic Secondary School vs St. Thomas Aquinas Catholic Secondary School
A head-to-head comparison of two secondary schools in Ontario, Canada, 63 km apart, using official Canadian 2025 data. The better value in each row is highlighted.
St Mary Catholic Secondary School
Pickering · Catholic secondary · Grades 9-12
1,310 students
St. Thomas Aquinas Catholic Secondary School
Oakville · Catholic secondary · Grades 9-12
1,310 students
| Measure | St Mary Catholic Secondary School Pickering, Ontario | St. Thomas Aquinas Catholic Secondary School Oakville, Ontario |
|---|---|---|
| Success Index (Canada) | 73 Top 25% | 74 Top 25% |
| Province rank | #143 of 766 | #133 of 766 |
| National rank | #143 of 766 | #133 of 766 |
| Sector | Catholic | Catholic |
| Type | Secondary | Secondary |
| Year range | Grades 9-12 | Grades 9-12 |
| Students | 1,310 | 1,310 |
| Enrolment | 1,310 | 1,310 |
| EQAO Grade 3 | – | – |
| EQAO Grade 6 | – | – |
| EQAO Grade 9 maths | 61% | 72% |
| OSSLT pass rate | 92% | 89% |
| Low-income households | 5% | 8% |
| Parents without a credential | 2% | 1% |
| First language not English | 7% | 28% |
| Special education | 20% | 18% |
| Identified as gifted | 0% | 2% |
| FSA literacy score | – | – |
| FSA numeracy score | – | – |
| FSA Grade 4 literacy score | – | – |
| FSA Grade 4 numeracy score | – | – |
| FSA Grade 7 literacy score | – | – |
| FSA Grade 7 numeracy score | – | – |
| city or town | Pickering | Oakville |
| province | Ontario | Ontario |
| Website | stmary.dcdsb.ca/ | sta.hcdsb.org/ |
The verdict
- •St. Thomas Aquinas Catholic Secondary School scores higher on the Success Index (Canada) (73.9 vs 72.8).
- •St. Thomas Aquinas Catholic Secondary School does better on eqao grade 9 mathematics (72% vs 61%).
- •St Mary Catholic Secondary School does better on osslt first-attempt pass rate (92% vs 89%).
The Success Index (Canada) summarises published results and context from official data. It does not measure teaching quality or fit. Methodology.
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Frequently asked questions
Is St Mary Catholic Secondary School better than St. Thomas Aquinas Catholic Secondary School?
On the Success Index (Canada), St. Thomas Aquinas Catholic Secondary School ranks higher (73.9 vs 72.8 out of 100). The index is built from published results and context data, not from teaching quality or fit, so visit both schools before deciding.
How far apart are St Mary Catholic Secondary School and St. Thomas Aquinas Catholic Secondary School?
About 63 km in a straight line, between Pickering and Oakville in Ontario.
Which has the better Enrolment?
St Mary Catholic Secondary School: 1,310. St. Thomas Aquinas Catholic Secondary School: 1,310. Students enrolled in the latest published year.
How do St Mary Catholic Secondary School and St. Thomas Aquinas Catholic Secondary School rank in Ontario?
St Mary Catholic Secondary School is 143rd of 766 and St. Thomas Aquinas Catholic Secondary School is 133rd of 766 among secondary schools in Ontario on the 2025 Success Index (Canada).