St Mary's High School
🇨🇦 Official data · 2025Woodstock, Ontario N4V1E8 · London District Catholic School Board
#469 of 766 secondary schools in Ontario
#469 of 766 nationally
About St Mary's High School
St Mary's High School is a catholic secondary located in Woodstock, in the London District Catholic School Board school board or district of Ontario, Canada. It caters for Grades 9-12. In 2025 it enrolled 605 students. Publicly funded Catholic (separate) school boards in Ontario; free to attend.
Its Success Index (Canada) is 42.1 out of 100, placing it in the lower 50% of secondary schools in Canada and 469th of 766 ranked secondary schools in Ontario. Its strongest component is community advantage (fewer low-income households) (66th percentile), and its weakest is eqao grade 9 mathematics (34th percentile).
Other published figures: enrolment 605; first language not english 4%; special education 24%; identified as gifted 0%.
There are 26 schools in Woodstock; St Mary's High School ranks 11th of 20 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%)48%
- OSSLT first-attempt pass rate (20%)82%
- FSA literacy score (25%)–
- FSA numeracy score (25%)–
- Community advantage (fewer low-income households) (10%)7%
- Parent education (fewer parents without a credential) (10%)4%
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 High School by the official sources.
- Enrolment
- 605
- Students enrolled in the latest published year.
- EQAO Grade 9 maths
- 48%
- % 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
- 7%
- % of students living in low-income households.
- Parents without a credential
- 4%
- % of students whose parents have no degree, diploma or certificate.
- First language not English
- 4%
- % of students whose first language is not English.
- Special education
- 24%
- % of students receiving special education services.
- Identified as gifted
- 0%
- % of students identified as gifted.
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Schools near St Mary's High School
Closest schools by straight-line distance, with their Success Index (Canada).
St Patrick's School
Woodstock · Catholic elementary · Grades JK-8
465 students · 681 m away
Southside Public School
Woodstock · Public elementary · Grades JK-8
395 students · 782 m away
Oliver Stephens Public School
Woodstock · Public elementary · Grades JK-8
325 students · 1.0 km away
College Avenue Secondary School
Woodstock · Public secondary · Grades 9-12
935 students · 1.2 km away
St Don Bosco Catholic Secondary School
Kitchener · Catholic alternative · Grades 9-12
· 1.7 km away
Eastdale Public School
Woodstock · Public elementary · Grades JK-8
275 students · 1.9 km away
Woodstock Collegiate Institute
Woodstock · Public secondary · Grades 9-12
590 students · 2.0 km away
Central Public School
Woodstock · Public elementary · Grades JK-8
460 students · 2.0 km away
Winchester Street Public School
Woodstock · Public elementary · Grades JK-8
390 students · 2.7 km away
Holy Family School
Woodstock · Catholic elementary · Grades JK-8
240 students · 2.7 km away
Similar schools
Catholic secondary schools in Ontario with a comparable Enrolment.
École secondaire catholique l'Essor
Tecumseh · Catholic secondary · Grades 9-12
610 students
École secondaire catholique Franco-Ouest
Nepean · Catholic secondary · Grades 9-12
595 students
St Joseph Morrow Park Catholic Secondary School
Toronto · Catholic secondary · Grades 9-12
595 students
École secondaire catholique de Casselman
Casselman · Catholic secondary · Grades 9-12
620 students
St Nicholas Adult High School
Ottawa · Catholic secondary · Grades 9-12
620 students
Our Lady of the Bay Catholic High School
Collingwood · Catholic secondary · Grades 9-12
620 students
Frequently asked questions
Is St Mary's High School a good school?
St Mary's High School has a Success Index (Canada) of 42.1 out of 100 (Lower 50% of secondary schools in Canada) and ranks #469 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 High School rank in Ontario?
St Mary's High School ranks #469 of 766 secondary schools in Ontario and #469 of 766 nationally on the Success Index (Canada) (2025 data).
How many students attend St Mary's High School?
St Mary's High School had 605 students in 2025.
Is St Mary's High School a elementary school or a secondary school?
St Mary's High School is classified as a secondary covering Grades 9-12. It is a catholic school.
What other schools are near St Mary's High School?
There are 10 schools within 15 km of St Mary's High School; they are listed on this page with their Success Index (Canada) and distance, and can be compared side by side.