Largest Schools in Peterborough Victoria Northum Clarington CDSB (2025)

Schools with the highest enrolment. Ranked by the Success Index (Canada) from official Canadian data; 36 schools in Peterborough Victoria Northum Clarington CDSB, Ontario. Rank positions shown on each profile are within Canada and Ontario.

1
50
St. Stephen Catholic Secondary SchoolBowmanville · Catholic SecondaryEnrolment: 1,300
2
57
St. Peter Catholic Secondary SchoolPeterborough · Catholic SecondaryEnrolment: 1,035
3
36
Holy Cross Catholic Secondary SchoolPeterborough · Catholic SecondaryEnrolment: 840
4
51
St. Mary Catholic Secondary SchoolCobourg · Catholic SecondaryEnrolment: 835
5
51
Holy Trinity Catholic Secondary SchoolCourtice · Catholic SecondaryEnrolment: 760
6
34
Holy Family Catholic Elementary SchoolBowmanville · Catholic ElementaryEnrolment: 760
7
38
St. Elizabeth Catholic Elementary SchoolBowmanville · Catholic ElementaryEnrolment: 720
8
47
Good Shepherd Catholic Elementary SchoolCourtice · Catholic ElementaryEnrolment: 650
9
64
St. Catherine Catholic Elementary SchoolPeterborough · Catholic ElementaryEnrolment: 610
10
47
St. Francis of Assisi Catholic Elementary SchoolNewcastle · Catholic ElementaryEnrolment: 575
11
44
St. Anne Catholic Elementary SchoolPeterborough · Catholic ElementaryEnrolment: 540
12
78
St. Joseph Catholic Elementary SchoolBowmanville · Catholic ElementaryEnrolment: 505
13
71
St. Martin Catholic Elementary SchoolEnnismore · Catholic ElementaryEnrolment: 415
14
85
St. Mother Teresa Catholic Elementary SchoolCourtice · Catholic ElementaryEnrolment: 400
15
45
Monsignor O'Donoghue Catholic Elementary SchoolPeterborough · Catholic ElementaryEnrolment: 380
16
37
St. Dominic Catholic Elementary SchoolLindsay · Catholic ElementaryEnrolment: 380
17
22
St. Anthony Catholic Elementary SchoolPort Hope · Catholic ElementaryEnrolment: 345
18
79
St. Paul Catholic Elementary SchoolPeterborough · Catholic ElementaryEnrolment: 330
19
24
St. Paul Catholic Elementary SchoolNorwood · Catholic ElementaryEnrolment: 325
20
50
St. Teresa Catholic Elementary SchoolPeterborough · Catholic ElementaryEnrolment: 300
21
53
St. Mary Catholic Elementary SchoolCampbellford · Catholic ElementaryEnrolment: 280
22
32
St. John Catholic Elementary SchoolPeterborough · Catholic ElementaryEnrolment: 270
23
32
St. Thomas Aquinas Catholic Secondary SchoolLindsay · Catholic SecondaryEnrolment: 260
24
44
Immaculate Conception Catholic Elementary SchoolPeterborough · Catholic ElementaryEnrolment: 235
25
19
St. John Paul II Catholic Elementary SchoolLindsay · Catholic ElementaryEnrolment: 235
26
56
St. Mary Catholic Elementary SchoolGrafton · Catholic ElementaryEnrolment: 220
27
29
St. Alphonsus Catholic Elementary SchoolPeterborough · Catholic ElementaryEnrolment: 215
28
91
St. Joseph Catholic Elementary SchoolDouro · Catholic ElementaryEnrolment: 205
29
67
Monsignor Leo Cleary Catholic Elementary SchoolCourtice · Catholic ElementaryEnrolment: 205
30
43
St. Joseph Catholic Elementary SchoolCobourg · Catholic ElementaryEnrolment: 200
31
25
St. Patrick Catholic Elementary SchoolPeterborough · Catholic ElementaryEnrolment: 200
32
32
St. Paul Catholic Elementary SchoolLakefield · Catholic ElementaryEnrolment: 195
33
71
St. Michael Catholic Elementary SchoolCobourg · Catholic ElementaryEnrolment: 160
34
38
St. Luke Catholic Elementary SchoolLindsay · Catholic ElementaryEnrolment: 160
35
83
Notre Dame Catholic Elementary SchoolCobourg · Catholic ElementaryEnrolment: 155
36
10
St. Mary Catholic Elementary SchoolLindsay · Catholic ElementaryEnrolment: 110

#	School	Sector	Enrolment	Success Index (Canada)	Key result	Students
1	St. Stephen Catholic Secondary School Bowmanville · Secondary · Grades 9-12	Catholic	1,300	50.4 Lower 50%	80% OSSLT pass rate	1,300
2	St. Peter Catholic Secondary School Peterborough · Secondary · Grades 9-12	Catholic	1,035	56.9 Top 50%	83% OSSLT pass rate	1,035
3	Holy Cross Catholic Secondary School Peterborough · Secondary · Grades 9-12	Catholic	840	36.4 Lower 50%	71% OSSLT pass rate	840
4	St. Mary Catholic Secondary School Cobourg · Secondary · Grades 9-12	Catholic	835	50.7 Top 50%	75% OSSLT pass rate	835
5	Holy Trinity Catholic Secondary School Courtice · Secondary · Grades 9-12	Catholic	760	50.5 Lower 50%	80% OSSLT pass rate	760
6	Holy Family Catholic Elementary School Bowmanville · Elementary · Grades JK-8	Catholic	760	34.0 Lower 50%	62% EQAO Grade 6	760
7	St. Elizabeth Catholic Elementary School Bowmanville · Elementary · Grades JK-8	Catholic	720	38.4 Lower 50%	66.7% EQAO Grade 6	720
8	Good Shepherd Catholic Elementary School Courtice · Elementary · Grades JK-8	Catholic	650	47.0 Lower 50%	63% EQAO Grade 6	650
9	St. Catherine Catholic Elementary School Peterborough · Elementary · Grades JK-8	Catholic	610	64.0 Top 50%	79% EQAO Grade 6	610
10	St. Francis of Assisi Catholic Elementary School Newcastle · Elementary · Grades JK-8	Catholic	575	47.3 Lower 50%	72% EQAO Grade 6	575
11	St. Anne Catholic Elementary School Peterborough · Elementary · Grades JK-8	Catholic	540	43.9 Lower 50%	77% EQAO Grade 6	540
12	St. Joseph Catholic Elementary School Bowmanville · Elementary · Grades JK-8	Catholic	505	78.4 Top 10%	86.7% EQAO Grade 6	505
13	St. Martin Catholic Elementary School Ennismore · Elementary · Grades JK-8	Catholic	415	70.7 Top 25%	80.3% EQAO Grade 6	415
14	St. Mother Teresa Catholic Elementary School Courtice · Elementary · Grades JK-8	Catholic	400	85.3 Top 5%	88% EQAO Grade 6	400
15	Monsignor O'Donoghue Catholic Elementary School Peterborough · Elementary · Grades JK-8	Catholic	380	44.6 Lower 50%	70% EQAO Grade 6	380
16	St. Dominic Catholic Elementary School Lindsay · Elementary · Grades JK-8	Catholic	380	36.5 Lower 50%	68.7% EQAO Grade 6	380
17	St. Anthony Catholic Elementary School Port Hope · Elementary · Grades JK-8	Catholic	345	21.6 Lower 50%	63% EQAO Grade 6	345
18	St. Paul Catholic Elementary School Peterborough · Elementary · Grades JK-8	Catholic	330	78.6 Top 10%	86% EQAO Grade 6	330
19	St. Paul Catholic Elementary School Norwood · Elementary · Grades JK-8	Catholic	325	23.8 Lower 50%	53% EQAO Grade 6	325
20	St. Teresa Catholic Elementary School Peterborough · Elementary · Grades JK-8	Catholic	300	50.4 Lower 50%	74.3% EQAO Grade 6	300
21	St. Mary Catholic Elementary School Campbellford · Elementary · Grades JK-8	Catholic	280	52.9 Top 50%	78% EQAO Grade 6	280
22	St. John Catholic Elementary School Peterborough · Elementary · Grades JK-8	Catholic	270	32.4 Lower 50%	55% EQAO Grade 6	270
23	St. Thomas Aquinas Catholic Secondary School Lindsay · Secondary · Grades 9-12	Catholic	260	32.1 Lower 50%	68% OSSLT pass rate	260
24	Immaculate Conception Catholic Elementary School Peterborough · Elementary · Grades JK-8	Catholic	235	44.0 Lower 50%	70.3% EQAO Grade 6	235
25	St. John Paul II Catholic Elementary School Lindsay · Elementary · Grades JK-8	Catholic	235	18.6 Lower 50%	35.3% EQAO Grade 6	235
26	St. Mary Catholic Elementary School Grafton · Elementary · Grades JK-8	Catholic	220	56.0 Top 50%	84.7% EQAO Grade 6	220
27	St. Alphonsus Catholic Elementary School Peterborough · Elementary · Grades JK-8	Catholic	215	28.9 Lower 50%	68.3% EQAO Grade 6	215
28	St. Joseph Catholic Elementary School Douro · Elementary · Grades JK-8	Catholic	205	91.0 Top 5%	93.3% EQAO Grade 6	205
29	Monsignor Leo Cleary Catholic Elementary School Courtice · Elementary · Grades JK-8	Catholic	205	66.6 Top 50%	74% EQAO Grade 6	205
30	St. Joseph Catholic Elementary School Cobourg · Elementary · Grades JK-8	Catholic	200	42.5 Lower 50%	62.3% EQAO Grade 6	200
31	St. Patrick Catholic Elementary School Peterborough · Elementary · Grades JK-8	Catholic	200	24.5 Lower 50%	66.7% EQAO Grade 6	200
32	St. Paul Catholic Elementary School Lakefield · Elementary · Grades JK-8	Catholic	195	31.6 Lower 50%	60.3% EQAO Grade 6	195
33	St. Michael Catholic Elementary School Cobourg · Elementary · Grades JK-8	Catholic	160	70.8 Top 25%	77.3% EQAO Grade 6	160
34	St. Luke Catholic Elementary School Lindsay · Elementary · Grades JK-8	Catholic	160	38.1 Lower 50%	77.3% EQAO Grade 6	160
35	Notre Dame Catholic Elementary School Cobourg · Elementary · Grades JK-8	Catholic	155	82.7 Top 10%	84.3% EQAO Grade 6	155
36	St. Mary Catholic Elementary School Lindsay · Elementary · Grades JK-8	Catholic	110	9.5 Lower 50%	54.7% EQAO Grade 6	110

St. Stephen Catholic Secondary School in Bowmanville leads the 2025 list of largest schools in Peterborough Victoria Northum Clarington CDSB with Enrolment 1,300. Of the 36 schools shown, 36 are catholic.

For the full picture see the wider Ontario largest schools rankings, every school on the Peterborough Victoria Northum Clarington CDSB 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 Victoria Northum Clarington CDSB?

St. Stephen Catholic Secondary School in Bowmanville, Ontario ranks first among largest schools in Peterborough Victoria Northum Clarington CDSB with Enrolment 1,300 (Enrolment: 1,300).

How are largest schools in Peterborough Victoria Northum Clarington CDSB 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.