Best secondary schools in Avon Maitland DSB (2025)
Secondary (high) schools and combined schools. Ranked by the Success Index (Canada) from official Canadian data; 8 schools in Avon Maitland DSB, Ontario. Rank positions shown on each profile are within Canada and Ontario.
- 177St Marys D.C. & V. I. High SchoolSt Marys · Public Secondary97% OSSLT pass rate · 430 students
- 250Goderich District Collegiate InstituteGoderich · Public Secondary88% OSSLT pass rate · 395 students
- 343South Huron District High SchoolExeter · Public Secondary82% OSSLT pass rate · 520 students
- 442Central Huron Secondary SchoolClinton · Public Secondary80% OSSLT pass rate · 500 students
- 539Stratford District Secondary SchoolStratford · Public Secondary79% OSSLT pass rate · 1,420 students
- 633Mitchell District High SchoolMitchell · Public Secondary83% OSSLT pass rate · 350 students
- 730Listowel District Secondary SchoolListowel · Public Secondary82% OSSLT pass rate · 930 students
- 88F E Madill Secondary SchoolWingham · Public Secondary69% OSSLT pass rate · 520 students
| # | School | Sector | Success Index (Canada) | Key result | Students |
|---|---|---|---|---|---|
| 1 | St Marys D.C. & V. I. High School St Marys · Secondary · Grades 9-12 | Public | 77.0 Top 25% | 97% OSSLT pass rate | 430 |
| 2 | Goderich District Collegiate Institute Goderich · Secondary · Grades 9-12 | Public | 49.7 Lower 50% | 88% OSSLT pass rate | 395 |
| 3 | South Huron District High School Exeter · Secondary · Grades 9-12 | Public | 43.3 Lower 50% | 82% OSSLT pass rate | 520 |
| 4 | Central Huron Secondary School Clinton · Secondary · Grades 9-12 | Public | 42.0 Lower 50% | 80% OSSLT pass rate | 500 |
| 5 | Stratford District Secondary School Stratford · Secondary · Grades 9-12 | Public | 39.1 Lower 50% | 79% OSSLT pass rate | 1,420 |
| 6 | Mitchell District High School Mitchell · Secondary · Grades 9-12 | Public | 32.7 Lower 50% | 83% OSSLT pass rate | 350 |
| 7 | Listowel District Secondary School Listowel · Secondary · Grades 9-12 | Public | 29.9 Lower 50% | 82% OSSLT pass rate | 930 |
| 8 | F E Madill Secondary School Wingham · Secondary · Grades 9-12 | Public | 7.6 Lower 50% | 69% OSSLT pass rate | 520 |
St Marys D.C. & V. I. High School in St Marys leads the 2025 list of secondary schools in Avon Maitland DSB with a Success Index (Canada) of 77.0. Of the 8 schools shown, 8 are public.
For the full picture see the wider Ontario secondary schools rankings, every school on the Avon Maitland DSB page, or the comparison tool to put a shortlist side by side.
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Frequently asked questions
What is the best secondary school in Avon Maitland DSB?
St Marys D.C. & V. I. High School in St Marys, Ontario ranks first among secondary schools in Avon Maitland DSB with a Success Index (Canada) of 77.0 out of 100 (Enrolment: 430).
How are secondary schools in Avon Maitland DSB ranked?
Each school's Success Index (Canada) combines 8 factors: eqao grade 3 (reading, writing, maths) (20%), eqao grade 6 (reading, writing, maths) (25%), eqao grade 9 mathematics (25%), osslt first-attempt pass rate (20%), fsa literacy score (25%), fsa numeracy score (25%), community advantage (fewer low-income households) (10%), parent education (fewer parents without a credential) (10%). Each factor is a percentile against schools of the same type across Canada. Schools with fewer than 60 students are excluded from rankings.
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.