Cosburn Middle School vs Diefenbaker Elementary School
A head-to-head comparison of two elementary schools in Ontario, Canada, 109 m apart, using official Canadian 2025 data. The better value in each row is highlighted.
Cosburn Middle School
East York · Public elementary · Grades 6-8
490 students
Diefenbaker Elementary School
East York · Public elementary · Grades JK-5
300 students
| Measure | Cosburn Middle School East York, Ontario | Diefenbaker Elementary School East York, Ontario |
|---|---|---|
| Success Index (Canada) | 56 Top 50% | 62 Top 50% |
| Province rank | #1662 of 3,871 | #1234 of 3,871 |
| National rank | #1662 of 3,871 | #1234 of 3,871 |
| Sector | Public | Public |
| Type | Elementary | Elementary |
| Year range | Grades 6-8 | Grades JK-5 |
| Students | 490 | 300 |
| Enrolment | 490 | 300 |
| EQAO Grade 3 | – | 68% |
| EQAO Grade 6 | 68.3% | – |
| EQAO Grade 9 maths | – | – |
| OSSLT pass rate | – | – |
| Low-income households | 0% | 5% |
| Parents without a credential | 0% | 0% |
| First language not English | 5% | 10% |
| Special education | 25% | 5% |
| 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 | East York | East York |
| province | Ontario | Ontario |
| Website | schoolweb.tdsb.on.ca/cosburn | www.tdsb.on.ca/MOSS/asp_apps/school_landing_page/index.asp?schno=1154 |
The verdict
- •Diefenbaker Elementary School scores higher on the Success Index (Canada) (62.2 vs 55.5).
- •Cosburn Middle School is the larger school with 490 students compared with 300.
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 Cosburn Middle School better than Diefenbaker Elementary School?
On the Success Index (Canada), Diefenbaker Elementary School ranks higher (62.2 vs 55.5 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 Cosburn Middle School and Diefenbaker Elementary School?
About 109 m in a straight line, between East York and East York in Ontario.
Which has the better Enrolment?
Cosburn Middle School: 490. Diefenbaker Elementary School: 300. Students enrolled in the latest published year.
How do Cosburn Middle School and Diefenbaker Elementary School rank in Ontario?
Cosburn Middle School is 1662nd of 3,871 and Diefenbaker Elementary School is 1234th of 3,871 among elementary schools in Ontario on the 2025 Success Index (Canada).