Largest Schools in Peterborough (2025)
Schools with the highest enrolment. Ranked by the Success Index (Canada) from official Canadian data; 32 schools in Peterborough, Ontario. Rank positions shown on each profile are within Canada and Ontario.
- 142Thomas A Stewart Secondary SchoolPeterborough · Public SecondaryEnrolment: 1,260
- 248Adam Scott Collegiate and Vocational InstitutePeterborough · Public SecondaryEnrolment: 1,055
- 357St. Peter Catholic Secondary SchoolPeterborough · Catholic SecondaryEnrolment: 1,035
- 436Holy Cross Catholic Secondary SchoolPeterborough · Catholic SecondaryEnrolment: 840
- 540Kaawaate East City Public SchoolPeterborough · Public ElementaryEnrolment: 780
- 661James Strath Public SchoolPeterborough · Public ElementaryEnrolment: 720
- 753Crestwood Secondary SchoolPeterborough · Public SecondaryEnrolment: 715
- 864St. Catherine Catholic Elementary SchoolPeterborough · Catholic ElementaryEnrolment: 610
- 916Prince of Wales Public SchoolPeterborough · Public ElementaryEnrolment: 555
- 1044St. Anne Catholic Elementary SchoolPeterborough · Catholic ElementaryEnrolment: 540
- 1150Edmison Heights Public SchoolPeterborough · Public ElementaryEnrolment: 530
- 1210Kenner Collegiate and Vocational InstitutePeterborough · Public SecondaryEnrolment: 525
- 1355Westmount Public SchoolPeterborough · Public ElementaryEnrolment: 475
- 1426Peterborough Collegiate and Vocational SchoolPeterborough · Public SecondaryEnrolment: 385
- 1545Monsignor O'Donoghue Catholic Elementary SchoolPeterborough · Catholic ElementaryEnrolment: 380
- 1615Queen Mary Public SchoolPeterborough · Public ElementaryEnrolment: 370
- 1779St. Paul Catholic Elementary SchoolPeterborough · Catholic ElementaryEnrolment: 330
- 1855Adam Scott Intermediate SchoolPeterborough · Public ElementaryEnrolment: 310
- 1950St. Teresa Catholic Elementary SchoolPeterborough · Catholic ElementaryEnrolment: 300
- 2032St. John Catholic Elementary SchoolPeterborough · Catholic ElementaryEnrolment: 270
- 2135R F Downey Public SchoolPeterborough · Public ElementaryEnrolment: 255
- 2249ÉÉC Monseigneur-JamotPeterborough · Catholic ElementaryEnrolment: 245
- 2316Roger Neilson Public SchoolPeterborough · Public ElementaryEnrolment: 245
- 2413Otonabee Valley Public SchoolPeterborough · Public ElementaryEnrolment: 245
- 2523Highland Heights Public SchoolPeterborough · Public ElementaryEnrolment: 240
- 2644Immaculate Conception Catholic Elementary SchoolPeterborough · Catholic ElementaryEnrolment: 235
- 2743Kawartha Heights Public SchoolPeterborough · Public ElementaryEnrolment: 235
- 2823Keith Wightman Public SchoolPeterborough · Public ElementaryEnrolment: 235
- 2980Queen Elizabeth Public SchoolPeterborough · Public ElementaryEnrolment: 225
- 3029St. Alphonsus Catholic Elementary SchoolPeterborough · Catholic ElementaryEnrolment: 215
- 3125St. Patrick Catholic Elementary SchoolPeterborough · Catholic ElementaryEnrolment: 200
- 3211Kenner Intermediate SchoolPeterborough · Public ElementaryEnrolment: 170
| # | School | Sector | Enrolment | Success Index (Canada) | Key result | Students |
|---|---|---|---|---|---|---|
| 1 | Thomas A Stewart Secondary School Peterborough · Secondary · Grades 9-12 | Public | 1,260 | 41.8 Lower 50% | 76% OSSLT pass rate | 1,260 |
| 2 | Adam Scott Collegiate and Vocational Institute Peterborough · Secondary · Grades 9-12 | Public | 1,055 | 47.6 Lower 50% | 85% OSSLT pass rate | 1,055 |
| 3 | St. Peter Catholic Secondary School Peterborough · Secondary · Grades 9-12 | Catholic | 1,035 | 56.9 Top 50% | 83% OSSLT pass rate | 1,035 |
| 4 | Holy Cross Catholic Secondary School Peterborough · Secondary · Grades 9-12 | Catholic | 840 | 36.4 Lower 50% | 71% OSSLT pass rate | 840 |
| 5 | Kaawaate East City Public School Peterborough · Elementary · Grades JK-8 | Public | 780 | 39.5 Lower 50% | 65.3% EQAO Grade 6 | 780 |
| 6 | James Strath Public School Peterborough · Elementary · Grades JK-8 | Public | 720 | 61.0 Top 50% | 73.7% EQAO Grade 6 | 720 |
| 7 | Crestwood Secondary School Peterborough · Secondary · Grades 9-12 | Public | 715 | 53.1 Top 50% | 84% OSSLT pass rate | 715 |
| 8 | St. Catherine Catholic Elementary School Peterborough · Elementary · Grades JK-8 | Catholic | 610 | 64.0 Top 50% | 79% EQAO Grade 6 | 610 |
| 9 | Prince of Wales Public School Peterborough · Elementary · Grades JK-8 | Public | 555 | 15.9 Lower 50% | 64.3% EQAO Grade 6 | 555 |
| 10 | St. Anne Catholic Elementary School Peterborough · Elementary · Grades JK-8 | Catholic | 540 | 43.9 Lower 50% | 77% EQAO Grade 6 | 540 |
| 11 | Edmison Heights Public School Peterborough · Elementary · Grades JK-6 | Public | 530 | 50.3 Lower 50% | 69.7% EQAO Grade 6 | 530 |
| 12 | Kenner Collegiate and Vocational Institute Peterborough · Secondary · Grades 9-12 | Public | 525 | 9.7 Lower 50% | 68% OSSLT pass rate | 525 |
| 13 | Westmount Public School Peterborough · Elementary · Grades JK-8 | Public | 475 | 54.9 Top 50% | 77% EQAO Grade 6 | 475 |
| 14 | Peterborough Collegiate and Vocational School Peterborough · Secondary · Grades 9-12 | Public | 385 | 25.8 Lower 50% | 385 Enrolment | 385 |
| 15 | Monsignor O'Donoghue Catholic Elementary School Peterborough · Elementary · Grades JK-8 | Catholic | 380 | 44.6 Lower 50% | 70% EQAO Grade 6 | 380 |
| 16 | Queen Mary Public School Peterborough · Elementary · Grades JK-8 | Public | 370 | 15.2 Lower 50% | 49% EQAO Grade 6 | 370 |
| 17 | St. Paul Catholic Elementary School Peterborough · Elementary · Grades JK-8 | Catholic | 330 | 78.6 Top 10% | 86% EQAO Grade 6 | 330 |
| 18 | Adam Scott Intermediate School Peterborough · Elementary · Grades 7-8 | Public | 310 | 54.6 Top 50% | 310 Enrolment | 310 |
| 19 | St. Teresa Catholic Elementary School Peterborough · Elementary · Grades JK-8 | Catholic | 300 | 50.4 Lower 50% | 74.3% EQAO Grade 6 | 300 |
| 20 | St. John Catholic Elementary School Peterborough · Elementary · Grades JK-8 | Catholic | 270 | 32.4 Lower 50% | 55% EQAO Grade 6 | 270 |
| 21 | R F Downey Public School Peterborough · Elementary · Grades JK-6 | Public | 255 | 34.8 Lower 50% | 66.3% EQAO Grade 6 | 255 |
| 22 | ÉÉC Monseigneur-Jamot Peterborough · Elementary · Grades JK-8 | Catholic | 245 | 48.7 Lower 50% | 66.7% EQAO Grade 6 | 245 |
| 23 | Roger Neilson Public School Peterborough · Elementary · Grades JK-8 | Public | 245 | 16.4 Lower 50% | 65.3% EQAO Grade 6 | 245 |
| 24 | Otonabee Valley Public School Peterborough · Elementary · Grades JK-8 | Public | 245 | 13.1 Lower 50% | 49.7% EQAO Grade 6 | 245 |
| 25 | Highland Heights Public School Peterborough · Elementary · Grades JK-8 | Public | 240 | 23.0 Lower 50% | 69.3% EQAO Grade 6 | 240 |
| 26 | Immaculate Conception Catholic Elementary School Peterborough · Elementary · Grades JK-8 | Catholic | 235 | 44.0 Lower 50% | 70.3% EQAO Grade 6 | 235 |
| 27 | Kawartha Heights Public School Peterborough · Elementary · Grades JK-6 | Public | 235 | 43.3 Lower 50% | 61.3% EQAO Grade 6 | 235 |
| 28 | Keith Wightman Public School Peterborough · Elementary · Grades JK-8 | Public | 235 | 22.6 Lower 50% | 69% EQAO Grade 6 | 235 |
| 29 | Queen Elizabeth Public School Peterborough · Elementary · Grades JK-8 | Public | 225 | 79.5 Top 10% | 88.7% EQAO Grade 6 | 225 |
| 30 | St. Alphonsus Catholic Elementary School Peterborough · Elementary · Grades JK-8 | Catholic | 215 | 28.9 Lower 50% | 68.3% EQAO Grade 6 | 215 |
| 31 | St. Patrick Catholic Elementary School Peterborough · Elementary · Grades JK-8 | Catholic | 200 | 24.5 Lower 50% | 66.7% EQAO Grade 6 | 200 |
| 32 | Kenner Intermediate School Peterborough · Elementary · Grades 7-8 | Public | 170 | 11.1 Lower 50% | 170 Enrolment | 170 |
Thomas A Stewart Secondary School in Peterborough leads the 2025 list of largest schools in Peterborough with Enrolment 1,260. Of the 32 schools shown, 20 are public, 12 are catholic.
For the full picture see the wider Ontario largest schools rankings, every school on the Peterborough page, or the comparison tool to put a shortlist side by side.
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Frequently asked questions
What is the best largest school in Peterborough?
Thomas A Stewart Secondary School in Peterborough, Ontario ranks first among largest schools in Peterborough with Enrolment 1,260 (Enrolment: 1,260).
How are largest schools in Peterborough ranked?
Schools with the highest enrolment. Only schools eligible for the Success Index (Canada) are included; the index is shown alongside for context.
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.