Best secondary schools in Sudbury (2025)
Secondary (high) schools and combined schools. Ranked by the Success Index (Canada) from official Canadian data; 10 schools in Sudbury, Ontario. Rank positions shown on each profile are within Canada and Ontario.
- 187Lo-Ellen Park Secondary SchoolSudbury · Public Secondary96% OSSLT pass rate · 885 students
- 284Lockerby Composite SchoolSudbury · Public Secondary97% OSSLT pass rate · 535 students
- 362École secondaire Macdonald-CartierSudbury · Public Secondary91% OSSLT pass rate · 385 students
- 461Collège Notre-DameSudbury · Catholic Secondary96% OSSLT pass rate · 345 students
- 552Marymount Academy Catholic SchoolSudbury · Catholic Secondary88% OSSLT pass rate · 220 students
- 652St Benedict Catholic Secondary SchoolSudbury · Catholic Secondary88% OSSLT pass rate · 645 students
- 740St Charles CollegeSudbury · Catholic Secondary84% OSSLT pass rate · 855 students
- 839École secondaire du Sacré-CoeurSudbury · Catholic Secondary77% OSSLT pass rate · 170 students
- 932Sudbury Secondary SchoolSudbury · Public Secondary78% OSSLT pass rate · 515 students
- 1023Lasalle Secondary SchoolSudbury · Public Secondary77% OSSLT pass rate · 840 students
| # | School | Sector | Success Index (Canada) | Key result | Students |
|---|---|---|---|---|---|
| 1 | Lo-Ellen Park Secondary School Sudbury · Secondary · Grades 9-12 | Public | 86.8 Top 5% | 96% OSSLT pass rate | 885 |
| 2 | Lockerby Composite School Sudbury · Secondary · Grades 9-12 | Public | 83.5 Top 10% | 97% OSSLT pass rate | 535 |
| 3 | École secondaire Macdonald-Cartier Sudbury · Secondary · Grades 9-12 | Public | 62.3 Top 50% | 91% OSSLT pass rate | 385 |
| 4 | Collège Notre-Dame Sudbury · Secondary · Grades 9-12 | Catholic | 60.9 Top 50% | 96% OSSLT pass rate | 345 |
| 5 | Marymount Academy Catholic School Sudbury · Secondary · Grades 9-12 | Catholic | 52.3 Top 50% | 88% OSSLT pass rate | 220 |
| 6 | St Benedict Catholic Secondary School Sudbury · Secondary · Grades 9-12 | Catholic | 51.5 Top 50% | 88% OSSLT pass rate | 645 |
| 7 | St Charles College Sudbury · Secondary · Grades 9-12 | Catholic | 40.0 Lower 50% | 84% OSSLT pass rate | 855 |
| 8 | École secondaire du Sacré-Coeur Sudbury · Secondary · Grades 9-12 | Catholic | 39.4 Lower 50% | 77% OSSLT pass rate | 170 |
| 9 | Sudbury Secondary School Sudbury · Secondary · Grades 9-12 | Public | 32.0 Lower 50% | 78% OSSLT pass rate | 515 |
| 10 | Lasalle Secondary School Sudbury · Secondary · Grades 9-12 | Public | 22.7 Lower 50% | 77% OSSLT pass rate | 840 |
Lo-Ellen Park Secondary School in Sudbury leads the 2025 list of secondary schools in Sudbury with a Success Index (Canada) of 86.8. Of the 10 schools shown, 5 are public, 5 are catholic.
For the full picture see the wider Ontario secondary schools rankings, every school on the Sudbury 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 Sudbury?
Lo-Ellen Park Secondary School in Sudbury, Ontario ranks first among secondary schools in Sudbury with a Success Index (Canada) of 86.8 out of 100 (Enrolment: 885).
How are secondary schools in Sudbury 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.