St. Mary Catholic Secondary School
🇨🇦 Official data · 2025Hamilton, Ontario L8S2G7 · Hamilton-Wentworth CDSB
#197 of 766 secondary schools in Ontario
#197 of 766 nationally
About St. Mary Catholic Secondary School
St. Mary Catholic Secondary School is a catholic secondary located in Hamilton, in the Hamilton-Wentworth CDSB school board or district of Ontario, Canada. It caters for Grades 9-12. In 2025 it enrolled 935 students. Publicly funded Catholic (separate) school boards in Ontario; free to attend.
Its Success Index (Canada) is 67.7 out of 100, placing it in the top 50% of secondary schools in Canada and 197th of 766 ranked secondary schools in Ontario. Its strongest component is eqao grade 9 mathematics (79th percentile), and its weakest is osslt first-attempt pass rate (52th percentile).
Other published figures: enrolment 935; first language not english 9%; special education 22%; identified as gifted 1%.
There are 123 schools in Hamilton; St. Mary Catholic Secondary School ranks 5th of 99 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%)69%
- OSSLT first-attempt pass rate (20%)86%
- FSA literacy score (25%)–
- FSA numeracy score (25%)–
- Community advantage (fewer low-income households) (10%)7%
- Parent education (fewer parents without a credential) (10%)2%
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 Catholic Secondary School by the official sources.
- Enrolment
- 935
- Students enrolled in the latest published year.
- EQAO Grade 9 maths
- 69%
- % at or above the provincial standard in Grade 9 mathematics.
- OSSLT pass rate
- 86%
- % passing the Grade 10 literacy test on the first attempt.
- Low-income households
- 7%
- % of students living in low-income households.
- Parents without a credential
- 2%
- % of students whose parents have no degree, diploma or certificate.
- First language not English
- 9%
- % of students whose first language is not English.
- Special education
- 22%
- % of students receiving special education services.
- Identified as gifted
- 1%
- % of students identified as gifted.
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Schools near St. Mary Catholic Secondary School
Closest schools by straight-line distance, with their Success Index (Canada).
Canadian Martyrs Catholic Elementary School
Hamilton · Catholic elementary · Grades JK-8
185 students · 693 m away
Glenwood School School
Hamilton · Public elementary · Grades K-8
· 747 m away
Dalewood Senior Public School
Hamilton · Public elementary · Grades 6-8
290 students · 1.3 km away
Mountview Junior Public School
Hamilton · Public elementary · Grades JK-6
265 students · 1.4 km away
St. Teresa of Avila Catholic Elementary School
Hamilton · Catholic elementary · Grades JK-8
220 students · 1.8 km away
Dundana Public School
Dundas · Public elementary · Grades JK-5
300 students · 2.0 km away
Holbrook Junior Public School
Hamilton · Public elementary · Grades JK-6
230 students · 2.1 km away
Westdale Secondary School
Hamilton · Public secondary · Grades 9-12
1,525 students · 2.3 km away
Cootes Paradise Public School
Hamilton · Public elementary · Grades JK-5
565 students · 2.3 km away
Chedoke Middle School
Hamilton · Public elementary · Grades JK-8
445 students · 2.4 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
St Mary's College Separate School
Sault Ste Marie · Catholic secondary · Grades 9-12
940 students
John Paul II Catholic Secondary School
London · Catholic secondary · Grades 9-12
940 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
Loyola Catholic Secondary School
Mississauga · Catholic secondary · Grades 9-12
950 students
Frequently asked questions
Is St. Mary Catholic Secondary School a good school?
St. Mary Catholic Secondary School has a Success Index (Canada) of 67.7 out of 100 (Top 50% of secondary schools in Canada) and ranks #197 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 Catholic Secondary School rank in Ontario?
St. Mary Catholic Secondary School ranks #197 of 766 secondary schools in Ontario and #197 of 766 nationally on the Success Index (Canada) (2025 data).
How many students attend St. Mary Catholic Secondary School?
St. Mary Catholic Secondary School had 935 students in 2025.
Is St. Mary Catholic Secondary School a elementary school or a secondary school?
St. Mary Catholic Secondary School is classified as a secondary covering Grades 9-12. It is a catholic school.
What other schools are near St. Mary Catholic Secondary School?
There are 10 schools within 15 km of St. Mary Catholic Secondary School; they are listed on this page with their Success Index (Canada) and distance, and can be compared side by side.