Best secondary schools in Gloucester (2025)
Secondary (high) schools and combined schools. Ranked by the Success Index (Canada) from official Canadian data; 5 schools in Gloucester, Ontario. Rank positions shown on each profile are within Canada and Ontario.
- 186Colonel By Secondary SchoolGloucester · Public Secondary96% OSSLT pass rate · 1,140 students
- 269École secondaire publique Louis-RielGloucester · Public Secondary94% OSSLT pass rate · 1,005 students
- 352St. Francis Xavier (9-12) Catholic SchoolGloucester · Catholic Secondary81% OSSLT pass rate · 1,665 students
- 422Lester B Pearson Catholic High SchoolGloucester · Catholic Secondary82% OSSLT pass rate · 750 students
- 57Gloucester High SchoolGloucester · Public Secondary64% OSSLT pass rate · 1,160 students
| # | School | Sector | Success Index (Canada) | Key result | Students |
|---|---|---|---|---|---|
| 1 | Colonel By Secondary School Gloucester · Secondary · Grades 9-12 | Public | 86.1 Top 5% | 96% OSSLT pass rate | 1,140 |
| 2 | École secondaire publique Louis-Riel Gloucester · Secondary · Grades 9-12 | Public | 68.9 Top 25% | 94% OSSLT pass rate | 1,005 |
| 3 | St. Francis Xavier (9-12) Catholic School Gloucester · Secondary · Grades 9-12 | Catholic | 52.3 Top 50% | 81% OSSLT pass rate | 1,665 |
| 4 | Lester B Pearson Catholic High School Gloucester · Secondary · Grades 9-12 | Catholic | 21.9 Lower 50% | 82% OSSLT pass rate | 750 |
| 5 | Gloucester High School Gloucester · Secondary · Grades 9-12 | Public | 6.5 Lower 50% | 64% OSSLT pass rate | 1,160 |
Colonel By Secondary School in Gloucester leads the 2025 list of secondary schools in Gloucester with a Success Index (Canada) of 86.1. Of the 5 schools shown, 3 are public, 2 are catholic.
For the full picture see the wider Ontario secondary schools rankings, every school on the Gloucester 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 Gloucester?
Colonel By Secondary School in Gloucester, Ontario ranks first among secondary schools in Gloucester with a Success Index (Canada) of 86.1 out of 100 (Enrolment: 1,140).
How are secondary schools in Gloucester 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.