Best secondary schools in CDSB of Eastern Ontario (2025)
Secondary (high) schools and combined schools. Ranked by the Success Index (Canada) from official Canadian data; 9 schools in CDSB of Eastern Ontario, Ontario. Rank positions shown on each profile are within Canada and Ontario.
- 180St Michael High SchoolKemptville · Catholic Secondary97% OSSLT pass rate · 520 students
- 273St. Thomas Aquinas Catholic High SchoolRussell · Catholic Secondary88% OSSLT pass rate · 515 students
- 364Notre Dame Catholic High SchoolCarleton Place · Catholic Secondary94% OSSLT pass rate · 555 students
- 458St Mary's High SchoolBrockville · Catholic Secondary93% OSSLT pass rate · 385 students
- 554St Francis Xavier Catholic High SchoolHammond · Catholic Secondary81% OSSLT pass rate · 260 students
- 639St John Catholic High SchoolPerth Road · Catholic Secondary81% OSSLT pass rate · 340 students
- 736St Joseph's Secondary SchoolCornwall · Catholic Secondary83% OSSLT pass rate · 745 students
- 820St. Luke Catholic High SchoolSmiths Falls · Catholic Secondary19% OSSLT pass rate · 110 students
- 918Holy Trinity Catholic Secondary SchoolSouth Glengarry · Catholic Secondary72% OSSLT pass rate · 535 students
| # | School | Sector | Success Index (Canada) | Key result | Students |
|---|---|---|---|---|---|
| 1 | St Michael High School Kemptville · Secondary · Grades 9-12 | Catholic | 80.0 Top 10% | 97% OSSLT pass rate | 520 |
| 2 | St. Thomas Aquinas Catholic High School Russell · Secondary · Grades 9-12 | Catholic | 73.0 Top 25% | 88% OSSLT pass rate | 515 |
| 3 | Notre Dame Catholic High School Carleton Place · Secondary · Grades 9-12 | Catholic | 63.9 Top 50% | 94% OSSLT pass rate | 555 |
| 4 | St Mary's High School Brockville · Secondary · Grades 9-12 | Catholic | 58.4 Top 50% | 93% OSSLT pass rate | 385 |
| 5 | St Francis Xavier Catholic High School Hammond · Secondary · Grades 9-12 | Catholic | 54.1 Top 50% | 81% OSSLT pass rate | 260 |
| 6 | St John Catholic High School Perth Road · Secondary · Grades 9-12 | Catholic | 39.4 Lower 50% | 81% OSSLT pass rate | 340 |
| 7 | St Joseph's Secondary School Cornwall · Secondary · Grades 9-12 | Catholic | 35.7 Lower 50% | 83% OSSLT pass rate | 745 |
| 8 | St. Luke Catholic High School Smiths Falls · Secondary · Grades 9-12 | Catholic | 20.1 Lower 50% | 19% OSSLT pass rate | 110 |
| 9 | Holy Trinity Catholic Secondary School South Glengarry · Secondary · Grades 9-12 | Catholic | 18.2 Lower 50% | 72% OSSLT pass rate | 535 |
St Michael High School in Kemptville leads the 2025 list of secondary schools in CDSB of Eastern Ontario with a Success Index (Canada) of 80.0. Of the 9 schools shown, 9 are catholic.
For the full picture see the wider Ontario secondary schools rankings, every school on the CDSB of Eastern Ontario 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 CDSB of Eastern Ontario?
St Michael High School in Kemptville, Ontario ranks first among secondary schools in CDSB of Eastern Ontario with a Success Index (Canada) of 80.0 out of 100 (Enrolment: 520).
How are secondary schools in CDSB of Eastern Ontario 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.