St Mary's Separate School vs Thousand Islands Intermediate School
A head-to-head comparison of two elementary schools in Ontario, Canada, 723 m apart, using official Canadian 2025 data. The better value in each row is highlighted.
St Mary's Separate School
Brockville · Catholic elementary · Grades 7-8
175 students
Thousand Islands Intermediate School
Brockville · Public elementary · Grades 7-8
220 students
| Measure | St Mary's Separate School Brockville, Ontario | Thousand Islands Intermediate School Brockville, Ontario |
|---|---|---|
| Success Index (Canada) | 38 Lower 50% | 55 Top 50% |
| Province rank | #2667 of 3,871 | #1740 of 3,871 |
| National rank | #2667 of 3,871 | #1740 of 3,871 |
| Sector | Catholic | Public |
| Type | Elementary | Elementary |
| Year range | Grades 7-8 | Grades 7-8 |
| Students | 175 | 220 |
| Enrolment | 175 | 220 |
| EQAO Grade 3 | – | – |
| EQAO Grade 6 | – | – |
| EQAO Grade 9 maths | – | – |
| OSSLT pass rate | – | – |
| Low-income households | 10% | 5% |
| Parents without a credential | 5% | 5% |
| First language not English | 0% | 0% |
| Special education | 25% | 35% |
| 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 | Brockville | Brockville |
| province | Ontario | Ontario |
| Website | www.stmarychs.cdsbeo.on.ca | tiss.ucdsb.on.ca/ |
The verdict
- •Thousand Islands Intermediate School scores higher on the Success Index (Canada) (54.6 vs 37.5).
- •Thousand Islands Intermediate School is the larger school with 220 students compared with 175.
- •St Mary's Separate School is a catholic school while Thousand Islands Intermediate School is a public school, so fees and admission rules differ.
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's Separate School better than Thousand Islands Intermediate School?
On the Success Index (Canada), Thousand Islands Intermediate School ranks higher (54.6 vs 37.5 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 St Mary's Separate School and Thousand Islands Intermediate School?
About 723 m in a straight line, between Brockville and Brockville in Ontario.
Which has the better Enrolment?
St Mary's Separate School: 175. Thousand Islands Intermediate School: 220. Students enrolled in the latest published year.
How do St Mary's Separate School and Thousand Islands Intermediate School rank in Ontario?
St Mary's Separate School is 2667th of 3,871 and Thousand Islands Intermediate School is 1740th of 3,871 among elementary schools in Ontario on the 2025 Success Index (Canada).