David Leeder Middle School vs St Marcellinus Secondary School
A head-to-head comparison of two schools in Ontario, Canada, 1.1 km apart, using official Canadian 2025 data. The better value in each row is highlighted.
David Leeder Middle School
Mississauga · Public elementary · Grades 6-8
720 students
St Marcellinus Secondary School
Mississauga · Catholic secondary · Grades 9-12
1,715 students
| Measure | David Leeder Middle School Mississauga, Ontario | St Marcellinus Secondary School Mississauga, Ontario |
|---|---|---|
| Success Index (Canada) | 55 Top 50% | 77 Top 25% |
| Province rank | #1677 of 3,871 | #105 of 766 |
| National rank | #1677 of 3,871 | #105 of 766 |
| Sector | Public | Catholic |
| Type | Elementary | Secondary |
| Year range | Grades 6-8 | Grades 9-12 |
| Students | 720 | 1,715 |
| Enrolment | 720 | 1,715 |
| EQAO Grade 3 | – | – |
| EQAO Grade 6 | 76% | – |
| EQAO Grade 9 maths | – | 68% |
| OSSLT pass rate | – | 91% |
| Low-income households | 6% | 5% |
| Parents without a credential | 2% | 2% |
| First language not English | 51% | 21% |
| Special education | 15% | 17% |
| Identified as gifted | 3% | 1% |
| 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 | Mississauga | Mississauga |
| province | Ontario | Ontario |
| Website | schools.peelschools.org/1544/Pages/default.aspx | www.dpcdsb.org/MARCL |
The verdict
- •St Marcellinus Secondary School scores higher on the Success Index (Canada) (76.6 vs 55.3).
- •St Marcellinus Secondary School is the larger school with 1,715 students compared with 720.
- •David Leeder Middle School is a public school while St Marcellinus Secondary School is a catholic 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 David Leeder Middle School better than St Marcellinus Secondary School?
On the Success Index (Canada), St Marcellinus Secondary School ranks higher (76.6 vs 55.3 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 David Leeder Middle School and St Marcellinus Secondary School?
About 1.1 km in a straight line, between Mississauga and Mississauga in Ontario.
Which has the better Enrolment?
David Leeder Middle School: 720. St Marcellinus Secondary School: 1,715. Students enrolled in the latest published year.
How do David Leeder Middle School and St Marcellinus Secondary School rank in Ontario?
David Leeder Middle School is 1677th of 3,871 and St Marcellinus Secondary School is 105th of 766 among elementary schools in Ontario on the 2025 Success Index (Canada).