Holy Trinity Catholic High School vs St Mary Catholic Secondary School
A head-to-head comparison of two secondary schools in Ontario, Canada, 303 km apart, using official Canadian 2025 data. The better value in each row is highlighted.
Holy Trinity Catholic High School
Kanata · Catholic secondary · Grades 9-12
1,315 students
St Mary Catholic Secondary School
Pickering · Catholic secondary · Grades 9-12
1,310 students
| Measure | Holy Trinity Catholic High School Kanata, Ontario | St Mary Catholic Secondary School Pickering, Ontario |
|---|---|---|
| Success Index (Canada) | 71 Top 25% | 73 Top 25% |
| Province rank | #165 of 766 | #143 of 766 |
| National rank | #165 of 766 | #143 of 766 |
| Sector | Catholic | Catholic |
| Type | Secondary | Secondary |
| Year range | Grades 9-12 | Grades 9-12 |
| Students | 1,315 | 1,310 |
| Enrolment | 1,315 | 1,310 |
| EQAO Grade 3 | – | – |
| EQAO Grade 6 | – | – |
| EQAO Grade 9 maths | 66% | 61% |
| OSSLT pass rate | 88% | 92% |
| Low-income households | 6% | 5% |
| Parents without a credential | 1% | 2% |
| First language not English | 29% | 7% |
| Special education | 23% | 20% |
| Identified as gifted | 0% | 0% |
| 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 | Kanata | Pickering |
| province | Ontario | Ontario |
| Website | trh.ocsb.ca | stmary.dcdsb.ca/ |
The verdict
- •St Mary Catholic Secondary School scores higher on the Success Index (Canada) (72.8 vs 70.5).
- •Holy Trinity Catholic High School does better on eqao grade 9 mathematics (66% vs 61%).
- •St Mary Catholic Secondary School does better on osslt first-attempt pass rate (92% vs 88%).
- •Holy Trinity Catholic High School is the larger school with 1,315 students compared with 1,310.
The Success Index (Canada) summarises published results and context from official data. It does not measure teaching quality or fit. Methodology.
Free academic assessment
Torn between two schools? Start with your child.
Whichever you choose, a free Success Tutoring assessment shows exactly where your child is in English and Maths and how to get ahead before the next school year.
- Personalised learning plan mapped to the Australian Curriculum
- English & Maths from Kindergarten to Year 12
- Flexible memberships, no lock-in contracts
- Centres across NSW, VIC, QLD, WA, SA and ACT
Frequently asked questions
Is Holy Trinity Catholic High School better than St Mary Catholic Secondary School?
On the Success Index (Canada), St Mary Catholic Secondary School ranks higher (72.8 vs 70.5 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 Holy Trinity Catholic High School and St Mary Catholic Secondary School?
About 303 km in a straight line, between Kanata and Pickering in Ontario.
Which has the better Enrolment?
Holy Trinity Catholic High School: 1,315. St Mary Catholic Secondary School: 1,310. Students enrolled in the latest published year.
How do Holy Trinity Catholic High School and St Mary Catholic Secondary School rank in Ontario?
Holy Trinity Catholic High School is 165th of 766 and St Mary Catholic Secondary School is 143rd of 766 among secondary schools in Ontario on the 2025 Success Index (Canada).