Secondary Schools by EQAO Results in Upper Canada DSB (2025)
Ontario secondary schools ranked by the OSSLT first-attempt pass rate, with Grade 9 mathematics as the tiebreaker. Listed with official data; 21 schools in Upper Canada DSB, Ontario. Rank positions shown on each profile are within Canada and Ontario.
- 167Charlottenburgh and Lancaster District High SchoolWilliamstown · Public SecondaryOSSLT pass: 96% · G9 maths 54%
- 261North Dundas District High SchoolChesterville · Public SecondaryOSSLT pass: 91% · G9 maths 59%
- 367Almonte District High SchoolAlmonte · Public SecondaryOSSLT pass: 90% · G9 maths 51%
- 468Gananoque Secondary SchoolGananoque · Public SecondaryOSSLT pass: 89% · G9 maths 67%
- 544Thousand Islands Secondary SchoolBrockville · Public SecondaryOSSLT pass: 89% · G9 maths 46%
- 659Carleton Place High SchoolCarleton Place · Public SecondaryOSSLT pass: 88% · G9 maths 49%
- 755Russell High SchoolRussell · Public SecondaryOSSLT pass: 87% · G9 maths 42%
- 851Glengarry District High SchoolAlexandria · Public SecondaryOSSLT pass: 86% · G9 maths 59%
- 960Rockland District High SchoolRockland · Public SecondaryOSSLT pass: 84% · G9 maths 55%
- 1073North Grenville District High SchoolKemptville · Public SecondaryOSSLT pass: 83% · G9 maths 72%
- 1135South Grenville District High SchoolPrescott · Public SecondaryOSSLT pass: 81% · G9 maths 35%
- 1259Brockville Collegiate InstituteBrockville · Public SecondaryOSSLT pass: 80% · G9 maths 67%
- 1365Rideau District High SchoolElgin · Public SecondaryOSSLT pass: 79% · G9 maths 67%
- 1421Smiths Falls District Collegiate InstituteSmiths Falls · Public SecondaryOSSLT pass: 79% · G9 maths 29%
- 1537Tagwi Secondary SchoolAvonmore · Public SecondaryOSSLT pass: 79% · G9 maths 25%
- 1637Seaway District High SchoolIroquois · Public SecondaryOSSLT pass: 73% · G9 maths 35%
- 1727Athens District High SchoolAthens · Public SecondaryOSSLT pass: 73% · G9 maths 22%
- 188Cornwall Collegiate and Vocational SchoolCornwall · Public SecondaryOSSLT pass: 72% · G9 maths 19%
- 1931Perth and District Collegiate InstitutePerth · Public SecondaryOSSLT pass: 71% · G9 maths 42%
- 2029Vankleek Hill Collegiate InstituteVankleek Hill · Public SecondaryOSSLT pass: 71% · G9 maths 35%
- 215St Lawrence Secondary SchoolCornwall · Public SecondaryOSSLT pass: 53% · G9 maths 20%
| # | School | Sector | OSSLT pass | Success Index (Canada) | Key result | Students |
|---|---|---|---|---|---|---|
| 1 | Charlottenburgh and Lancaster District High School Williamstown · Secondary · Grades 9-12 | Public | 96% · G9 maths 54% | 67.3 Top 50% | 96% OSSLT pass rate | 200 |
| 2 | North Dundas District High School Chesterville · Secondary · Grades 9-12 | Public | 91% · G9 maths 59% | 60.8 Top 50% | 91% OSSLT pass rate | 380 |
| 3 | Almonte District High School Almonte · Secondary · Grades 9-12 | Public | 90% · G9 maths 51% | 66.5 Top 50% | 90% OSSLT pass rate | 380 |
| 4 | Gananoque Secondary School Gananoque · Secondary · Grades 9-12 | Public | 89% · G9 maths 67% | 68.0 Top 50% | 89% OSSLT pass rate | 335 |
| 5 | Thousand Islands Secondary School Brockville · Secondary · Grades 9-12 | Public | 89% · G9 maths 46% | 43.5 Lower 50% | 89% OSSLT pass rate | 640 |
| 6 | Carleton Place High School Carleton Place · Secondary · Grades 9-12 | Public | 88% · G9 maths 49% | 59.3 Top 50% | 88% OSSLT pass rate | 670 |
| 7 | Russell High School Russell · Secondary · Grades 9-12 | Public | 87% · G9 maths 42% | 55.0 Top 50% | 87% OSSLT pass rate | 360 |
| 8 | Glengarry District High School Alexandria · Secondary · Grades 9-12 | Public | 86% · G9 maths 59% | 51.4 Top 50% | 86% OSSLT pass rate | 235 |
| 9 | Rockland District High School Rockland · Secondary · Grades 9-12 | Public | 84% · G9 maths 55% | 60.1 Top 50% | 84% OSSLT pass rate | 340 |
| 10 | North Grenville District High School Kemptville · Secondary · Grades 9-12 | Public | 83% · G9 maths 72% | 73.4 Top 25% | 83% OSSLT pass rate | 605 |
| 11 | South Grenville District High School Prescott · Secondary · Grades 9-12 | Public | 81% · G9 maths 35% | 35.3 Lower 50% | 81% OSSLT pass rate | 370 |
| 12 | Brockville Collegiate Institute Brockville · Secondary · Grades 9-12 | Public | 80% · G9 maths 67% | 58.7 Top 50% | 80% OSSLT pass rate | 425 |
| 13 | Rideau District High School Elgin · Secondary · Grades 9-12 | Public | 79% · G9 maths 67% | 64.5 Top 50% | 79% OSSLT pass rate | 295 |
| 14 | Smiths Falls District Collegiate Institute Smiths Falls · Secondary · Grades 9-12 | Public | 79% · G9 maths 29% | 20.5 Lower 50% | 79% OSSLT pass rate | 700 |
| 15 | Tagwi Secondary School Avonmore · Secondary · Grades 9-12 | Public | 79% · G9 maths 25% | 37.3 Lower 50% | 79% OSSLT pass rate | 495 |
| 16 | Seaway District High School Iroquois · Secondary · Grades 9-12 | Public | 73% · G9 maths 35% | 36.5 Lower 50% | 73% OSSLT pass rate | 265 |
| 17 | Athens District High School Athens · Secondary · Grades 9-12 | Public | 73% · G9 maths 22% | 26.6 Lower 50% | 73% OSSLT pass rate | 160 |
| 18 | Cornwall Collegiate and Vocational School Cornwall · Secondary · Grades 9-12 | Public | 72% · G9 maths 19% | 7.9 Lower 50% | 72% OSSLT pass rate | 575 |
| 19 | Perth and District Collegiate Institute Perth · Secondary · Grades 9-12 | Public | 71% · G9 maths 42% | 31.3 Lower 50% | 71% OSSLT pass rate | 580 |
| 20 | Vankleek Hill Collegiate Institute Vankleek Hill · Secondary · Grades 9-12 | Public | 71% · G9 maths 35% | 29.2 Lower 50% | 71% OSSLT pass rate | 370 |
| 21 | St Lawrence Secondary School Cornwall · Secondary · Grades 9-12 | Public | 53% · G9 maths 20% | 5.1 Lower 50% | 53% OSSLT pass rate | 505 |
Charlottenburgh and Lancaster District High School in Williamstown leads the 2025 list of secondary schools by eqao results in Upper Canada DSB with OSSLT pass 96% · G9 maths 54%. Of the 21 schools shown, 21 are public.
For the full picture see the wider Ontario secondary schools by eqao results rankings, every school on the Upper Canada DSB page, or the comparison tool to put a shortlist side by side.
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Frequently asked questions
What is the best eqao (secondary) school in Upper Canada DSB?
Charlottenburgh and Lancaster District High School in Williamstown, Ontario ranks first among secondary schools by eqao results in Upper Canada DSB with OSSLT pass 96% · G9 maths 54% (Enrolment: 200).
How are secondary schools by eqao results in Upper Canada DSB ranked?
Ontario secondary schools ranked by the OSSLT first-attempt pass rate, with Grade 9 mathematics as the tiebreaker. Figures are the most recent published by the national authority and matched to the school directory.
Are these 2025 rankings official?
No. They are computed by Success Tutoring from official Canadian data (Ontario – School information and student demographics; BC Data Catalogue – Foundation Skills Assessment). Provinces publish different assessments, so scores are comparable within a province, not between provinces.