St Mary's College Separate School
🇨🇦 Official data · 2025Sault Ste Marie, Ontario P6B4K4 · Huron-Superior CDSB
#457 of 766 secondary schools in Ontario
#457 of 766 nationally
About St Mary's College Separate School
St Mary's College Separate School is a catholic secondary located in Sault Ste Marie, in the Huron-Superior CDSB school board or district of Ontario, Canada. It caters for Grades 9-12. In 2025 it enrolled 940 students. Publicly funded Catholic (separate) school boards in Ontario; free to attend.
Its Success Index (Canada) is 43.3 out of 100, placing it in the lower 50% of secondary schools in Canada and 457th of 766 ranked secondary schools in Ontario. Its strongest component is parent education (fewer parents without a credential) (61th percentile), and its weakest is osslt first-attempt pass rate (36th percentile).
Other published figures: enrolment 940; first language not english 10%; special education 27%; identified as gifted 0%.
There are 38 schools in Sault Ste Marie; St Mary's College Separate School ranks 15th of 33 scored schools there.
Success Index (Canada) breakdown
Each component is a percentile against secondary schools across Canada.
- EQAO Grade 3 (reading, writing, maths) (20%)–
- EQAO Grade 6 (reading, writing, maths) (25%)–
- EQAO Grade 9 mathematics (25%)52%
- OSSLT first-attempt pass rate (20%)82%
- FSA literacy score (25%)–
- FSA numeracy score (25%)–
- Community advantage (fewer low-income households) (10%)10%
- Parent education (fewer parents without a credential) (10%)3%
The Success Index (Canada) summarises published data about a school community. It is not a measure of teaching quality. Read the methodology.
Published measures
All figures published for St Mary's College Separate School by the official sources.
- Enrolment
- 940
- Students enrolled in the latest published year.
- EQAO Grade 9 maths
- 52%
- % at or above the provincial standard in Grade 9 mathematics.
- OSSLT pass rate
- 82%
- % passing the Grade 10 literacy test on the first attempt.
- Low-income households
- 10%
- % of students living in low-income households.
- Parents without a credential
- 3%
- % of students whose parents have no degree, diploma or certificate.
- First language not English
- 10%
- % of students whose first language is not English.
- Special education
- 27%
- % of students receiving special education services.
- Identified as gifted
- 0%
- % of students identified as gifted.
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Schools near St Mary's College Separate School
Closest schools by straight-line distance, with their Success Index (Canada).
École secondaire Notre-Dame-du-Sault
Sault Ste Marie · Catholic secondary · Grades 9-12
· 681 m away
St. Basil Catholic School
Sault Ste. Marie · Catholic elementary · Grades JK-8
725 students · 685 m away
Northern Heights Public School
Sault Ste Marie · Public elementary · Grades JK-8
240 students · 1.5 km away
École élémentaire Notre-Dame-du-Sault
Sault Ste. Marie · Catholic elementary · Grades JK-8
215 students · 1.6 km away
Francis H Clergue Public School
Sault Ste Marie · Public elementary · Grades JK-8
545 students · 2.0 km away
Boreal French Immersion Public School
Sault Ste Marie · Public elementary · Grades JK-8
430 students · 2.0 km away
Superior Heights Community Education
Sault Ste Marie · Public elementary · Grades 7-8
· 2.4 km away
Superior Heights Intermediate School
Sault Ste. Marie · Public elementary · Grades 7-8
135 students · 2.4 km away
St Paul Catholic School
Sault Ste Marie · Catholic elementary · Grades JK-8
390 students · 2.4 km away
Kiwedin Public School
Sault Ste Marie · Public elementary · Grades JK-6
170 students · 2.6 km away
Similar schools
Catholic secondary schools in Ontario with a comparable Enrolment.
St Augustine Secondary School
Brampton · Catholic secondary · Grades 9-12
940 students
John Paul II Catholic Secondary School
London · Catholic secondary · Grades 9-12
940 students
St. Mary Catholic Secondary School
Hamilton · Catholic secondary · Grades 9-12
935 students
Loyola Catholic Secondary School
Mississauga · Catholic secondary · Grades 9-12
950 students
Denis Morris Catholic High School
St Catharines · Catholic secondary · Grades 9-12
930 students
St Joseph's Separate School
Barrie · Catholic secondary · Grades 9-12
930 students
Frequently asked questions
Is St Mary's College Separate School a good school?
St Mary's College Separate School has a Success Index (Canada) of 43.3 out of 100 (Lower 50% of secondary schools in Canada) and ranks #457 of 766 in Ontario. The index summarises published data about the school community and, where available, attainment; it does not measure teaching quality, so visit the school and ask about support at your child's level.
Where does St Mary's College Separate School rank in Ontario?
St Mary's College Separate School ranks #457 of 766 secondary schools in Ontario and #457 of 766 nationally on the Success Index (Canada) (2025 data).
How many students attend St Mary's College Separate School?
St Mary's College Separate School had 940 students in 2025.
Is St Mary's College Separate School a elementary school or a secondary school?
St Mary's College Separate School is classified as a secondary covering Grades 9-12. It is a catholic school.
What other schools are near St Mary's College Separate School?
There are 10 schools within 15 km of St Mary's College Separate School; they are listed on this page with their Success Index (Canada) and distance, and can be compared side by side.