St. Thomas Aquinas Catholic Secondary School
🇨🇦 Official data · 2025Oakville, Ontario L6K2W1 · Halton CDSB
#133 of 766 secondary schools in Ontario
#133 of 766 nationally
About St. Thomas Aquinas Catholic Secondary School
St. Thomas Aquinas Catholic Secondary School is a catholic secondary located in Oakville, in the Halton CDSB school board or district of Ontario, Canada. It caters for Grades 9-12. In 2025 it enrolled 1,310 students. Publicly funded Catholic (separate) school boards in Ontario; free to attend.
Its Success Index (Canada) is 73.9 out of 100, placing it in the top 25% of secondary schools in Canada and 133rd of 766 ranked secondary schools in Ontario. Its strongest component is eqao grade 9 mathematics (84th percentile), and its weakest is community advantage (fewer low-income households) (60th percentile).
Other published figures: enrolment 1,310; first language not english 28%; special education 18%; identified as gifted 2%.
There are 103 schools in Oakville; St. Thomas Aquinas Catholic Secondary School ranks 27th of 61 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%)72%
- OSSLT first-attempt pass rate (20%)89%
- FSA literacy score (25%)–
- FSA numeracy score (25%)–
- Community advantage (fewer low-income households) (10%)8%
- Parent education (fewer parents without a credential) (10%)1%
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. Thomas Aquinas Catholic Secondary School by the official sources.
- Enrolment
- 1,310
- Students enrolled in the latest published year.
- EQAO Grade 9 maths
- 72%
- % at or above the provincial standard in Grade 9 mathematics.
- OSSLT pass rate
- 89%
- % passing the Grade 10 literacy test on the first attempt.
- Low-income households
- 8%
- % of students living in low-income households.
- Parents without a credential
- 1%
- % of students whose parents have no degree, diploma or certificate.
- First language not English
- 28%
- % of students whose first language is not English.
- Special education
- 18%
- % of students receiving special education services.
- Identified as gifted
- 2%
- % of students identified as gifted.
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Schools near St. Thomas Aquinas Catholic Secondary School
Closest schools by straight-line distance, with their Success Index (Canada).
W H Morden Public School
Oakville · Public elementary · Grades JK-8
590 students · 502 m away
Thomas Merton Online Catholic School
Oakville · Catholic secondary · Grades 9-12
· 609 m away
ÉÉC Sainte-Marie-Oakville
Oakville · Catholic elementary · Grades JK-8
295 students · 816 m away
Oakwood Public School
Oakville · Public elementary · Grades JK-6
265 students · 1.3 km away
Pine Grove Public School
Oakville · Public elementary · Grades 1-8
325 students · 1.5 km away
Thomas A Blakelock High School
Oakville · Public secondary · Grades 9-12
1,165 students · 2.2 km away
Brookdale Public School
Oakville · Public elementary · Grades JK-8
325 students · 2.2 km away
New Central Public School
Oakville · Public elementary · Grades JK-6
300 students · 2.4 km away
St. Nicholas Catholic Elementary School
Oakville · Catholic elementary · Grades JK-8
625 students · 2.4 km away
École élémentaire Patricia-Picknell
Oakville · Public elementary · Grades JK-6
105 students · 2.6 km away
Similar schools
Catholic secondary schools in Ontario with a comparable Enrolment.
St Mary Catholic Secondary School
Pickering · Catholic secondary · Grades 9-12
1,310 students
Catholic Central High School
London · Catholic secondary · Grades 9-12
1,310 students
Holy Trinity Catholic High School
Kanata · Catholic secondary · Grades 9-12
1,315 students
St. Ignatius of Loyola Catholic Secondary School
Oakville · Catholic secondary · Grades 9-12
1,300 students
Bishop Tonnos Catholic Secondary School
Ancaster · Catholic secondary · Grades 9-12
1,320 students
St. Stephen Catholic Secondary School
Bowmanville · Catholic secondary · Grades 9-12
1,300 students
Frequently asked questions
Is St. Thomas Aquinas Catholic Secondary School a good school?
St. Thomas Aquinas Catholic Secondary School has a Success Index (Canada) of 73.9 out of 100 (Top 25% of secondary schools in Canada) and ranks #133 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. Thomas Aquinas Catholic Secondary School rank in Ontario?
St. Thomas Aquinas Catholic Secondary School ranks #133 of 766 secondary schools in Ontario and #133 of 766 nationally on the Success Index (Canada) (2025 data).
How many students attend St. Thomas Aquinas Catholic Secondary School?
St. Thomas Aquinas Catholic Secondary School had 1,310 students in 2025.
Is St. Thomas Aquinas Catholic Secondary School a elementary school or a secondary school?
St. Thomas Aquinas Catholic Secondary School is classified as a secondary covering Grades 9-12. It is a catholic school.
What other schools are near St. Thomas Aquinas Catholic Secondary School?
There are 10 schools within 15 km of St. Thomas Aquinas Catholic Secondary School; they are listed on this page with their Success Index (Canada) and distance, and can be compared side by side.