Archbishop Denis O'Connor Catholic High School vs Ontario Street Public School
A head-to-head comparison of two schools in Ontario, Canada, 533 m apart, using official Canadian 2025 data. The better value in each row is highlighted.
Archbishop Denis O'Connor Catholic High School
Ajax · Catholic secondary · Grades 9-12
710 students
Ontario Street Public School
Ajax · Public elementary · Grades JK-8
215 students
| Measure | Archbishop Denis O'Connor Catholic High School Ajax, Ontario | Ontario Street Public School Ajax, Ontario |
|---|---|---|
| Success Index (Canada) | 50 Lower 50% | 27 Lower 50% |
| Province rank | #393 of 766 | #3183 of 3,871 |
| National rank | #393 of 766 | #3183 of 3,871 |
| Sector | Catholic | Public |
| Type | Secondary | Elementary |
| Year range | Grades 9-12 | Grades JK-8 |
| Students | 710 | 215 |
| Enrolment | 710 | 215 |
| EQAO Grade 3 | – | 60% |
| EQAO Grade 6 | – | 41.3% |
| EQAO Grade 9 maths | 49% | – |
| OSSLT pass rate | 85% | – |
| Low-income households | 6% | 5% |
| Parents without a credential | 3% | 5% |
| First language not English | 11% | 20% |
| Special education | 24% | 10% |
| 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 | Ajax | Ajax |
| province | Ontario | Ontario |
| Website | doc.dcdsb.ca/ | lordelgin.ddsb.ca |
The verdict
- •Archbishop Denis O'Connor Catholic High School scores higher on the Success Index (Canada) (49.7 vs 26.6).
- •Archbishop Denis O'Connor Catholic High School is the larger school with 710 students compared with 215.
- •Archbishop Denis O'Connor Catholic High School is a catholic school while Ontario Street Public 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 Archbishop Denis O'Connor Catholic High School better than Ontario Street Public School?
On the Success Index (Canada), Archbishop Denis O'Connor Catholic High School ranks higher (49.7 vs 26.6 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 Archbishop Denis O'Connor Catholic High School and Ontario Street Public School?
About 533 m in a straight line, between Ajax and Ajax in Ontario.
Which has the better Enrolment?
Archbishop Denis O'Connor Catholic High School: 710. Ontario Street Public School: 215. Students enrolled in the latest published year.
How do Archbishop Denis O'Connor Catholic High School and Ontario Street Public School rank in Ontario?
Archbishop Denis O'Connor Catholic High School is 393rd of 766 and Ontario Street Public School is 3183rd of 3,871 among secondary schools in Ontario on the 2025 Success Index (Canada).