Largest Schools in Sudbury (2025)

Schools with the highest enrolment. Ranked by the Success Index (Canada) from official Canadian data; 41 schools in Sudbury, Ontario. Rank positions shown on each profile are within Canada and Ontario.

#	School	Sector	Enrolment	Success Index (Canada)	Key result	Students
1	Lo-Ellen Park Secondary School Sudbury · Secondary · Grades 9-12	Public	885	86.8 Top 5%	96% OSSLT pass rate	885
2	St Charles College Sudbury · Secondary · Grades 9-12	Catholic	855	40.0 Lower 50%	84% OSSLT pass rate	855
3	Lasalle Secondary School Sudbury · Secondary · Grades 9-12	Public	840	22.7 Lower 50%	77% OSSLT pass rate	840
4	MacLeod Public School Sudbury · Elementary · Grades JK-8	Public	805	64.2 Top 50%	78.3% EQAO Grade 6	805
5	Holy Trinity School Sudbury · Elementary · Grades JK-6	Catholic	655	22.3 Lower 50%	64% EQAO Grade 6	655
6	St Benedict Catholic Secondary School Sudbury · Secondary · Grades 9-12	Catholic	645	51.5 Top 50%	88% OSSLT pass rate	645
7	R L Beattie Public School Sudbury · Elementary · Grades JK-6	Public	600	89.0 Top 5%	95.7% EQAO Grade 6	600
8	Churchill Public School Sudbury · Elementary · Grades JK-8	Public	540	30.0 Lower 50%	72.7% EQAO Grade 6	540
9	Lockerby Composite School Sudbury · Secondary · Grades 9-12	Public	535	83.5 Top 10%	97% OSSLT pass rate	535
10	Sudbury Secondary School Sudbury · Secondary · Grades 9-12	Public	515	32.0 Lower 50%	78% OSSLT pass rate	515
11	Princess Anne Public School Sudbury · Elementary · Grades JK-8	Public	485	28.2 Lower 50%	61.3% EQAO Grade 6	485
12	St Francis Catholic School Sudbury · Elementary · Grades JK-6	Catholic	450	24.0 Lower 50%	66.7% EQAO Grade 6	450
13	École secondaire Macdonald-Cartier Sudbury · Secondary · Grades 9-12	Public	385	62.3 Top 50%	91% OSSLT pass rate	385
14	Algonquin Road Public School Sudbury · Elementary · Grades JK-8	Public	375	82.2 Top 10%	91.3% EQAO Grade 6	375
15	St. Charles College Elementary Sudbury · Elementary · Grades 7-8	Catholic	375	59.2 Top 50%	375 Enrolment	375
16	Holy Cross Catholic School School Sudbury · Elementary · Grades JK-6	Catholic	365	63.7 Top 50%	82% EQAO Grade 6	365
17	Lasalle Elementary School Sudbury · Elementary · Grades JK-6	Public	360	68.7 Top 25%	80% EQAO Grade 6	360
18	Collège Notre-Dame Sudbury · Secondary · Grades 9-12	Catholic	345	60.9 Top 50%	96% OSSLT pass rate	345
19	St David Catholic School Sudbury · Elementary · Grades JK-8	Catholic	325	12.7 Lower 50%	47.7% EQAO Grade 6	325
20	École publique Jean-Éthier-Blais Sudbury · Elementary · Grades JK-6	Public	320	45.1 Lower 50%	62% EQAO Grade 6	320
21	École élémentaire Saint-Denis Sudbury · Elementary · Grades JK-8	Catholic	310	56.3 Top 50%	75.7% EQAO Grade 6	310
22	Lansdowne Public School Sudbury · Elementary · Grades JK-8	Public	300	7.4 Lower 50%	52.3% EQAO Grade 6	300
23	St. Benedict Elementary Catholic School Sudbury · Elementary · Grades 7-8	Catholic	295	59.2 Top 50%	295 Enrolment	295
24	École publique Hélène-Gravel Sudbury · Elementary · Grades JK-6	Public	290	63.0 Top 50%	83.7% EQAO Grade 6	290
25	Lasalle Intermediate School Sudbury · Elementary · Grades 7-8	Public	285	11.1 Lower 50%	285 Enrolment	285
26	Pius XII Catholic School Sudbury · Elementary · Grades JK-8	Catholic	275	33.3 Lower 50%	60.3% EQAO Grade 6	275
27	Alexander Public School Sudbury · Elementary · Grades JK-8	Public	270	78.6 Top 10%	88.7% EQAO Grade 6	270
28	École élémentaire catholique Félix-Ricard Sudbury · Elementary · Grades JK-8	Catholic	260	66.7 Top 50%	87.7% EQAO Grade 6	260
29	Marymount Academy Catholic School Sudbury · Secondary · Grades 9-12	Catholic	220	52.3 Top 50%	88% OSSLT pass rate	220
30	Bishop Alexander Carter Elementary Schoo Sudbury · Elementary · Grades 7-8	Catholic	215	76.3 Top 25%	215 Enrolment	215
31	Adamsdale Public School Sudbury · Elementary · Grades JK-6	Public	215	15.3 Lower 50%	60.3% EQAO Grade 6	215
32	École élémentaire Saint-Pierre Sudbury · Elementary · Grades JK-8	Catholic	195	44.8 Lower 50%	74.3% EQAO Grade 6	195
33	Marymount Elementary Academy Sudbury · Elementary · Grades 7-8	Catholic	190	37.5 Lower 50%	190 Enrolment	190
34	École publique Macdonald-Cartier Sudbury · Elementary · Grades 7-8	Public	185	59.2 Top 50%	185 Enrolment	185
35	Queen Elizabeth II Public School Sudbury · Elementary · Grades JK-6	Public	185	17.8 Lower 50%	68.3% EQAO Grade 6	185
36	Lo-Ellen Park Elementary School Sudbury · Elementary · Grades 7-8	Public	175	86.7 Top 5%	175 Enrolment	175
37	École secondaire du Sacré-Coeur Sudbury · Secondary · Grades 9-12	Catholic	170	39.4 Lower 50%	77% OSSLT pass rate	170
38	École élémentaire Saint-Dominique Sudbury · Elementary · Grades JK-6	Catholic	160	66.0 Top 50%	90% EQAO Grade 3	160
39	École publique Jeanne-Sauvé Sudbury · Elementary · Grades JK-6	Public	110	14.7 Lower 50%	52.7% EQAO Grade 6	110
40	École élémentaire Saint-Joseph Sudbury · Elementary · Grades JK-8	Catholic	75	70.3 Top 25%	93.3% EQAO Grade 3	75
41	Jean Hanson Public School Sudbury · Elementary · Grades JK-8	Public	70	43.2 Lower 50%	70 Enrolment	70

Lo-Ellen Park Secondary School in Sudbury leads the 2025 list of largest schools in Sudbury with Enrolment 885. Of the 41 schools shown, 22 are public, 19 are catholic.

For the full picture see the wider Ontario largest 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 largest school in Sudbury?

Lo-Ellen Park Secondary School in Sudbury, Ontario ranks first among largest schools in Sudbury with Enrolment 885 (Enrolment: 885).

How are largest schools in Sudbury 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.