Holy Trinity Catholic Secondary School
🇨🇦 Official data · 2025Oakville, Ontario L6H5Z8 · Halton CDSB
#172 of 766 secondary schools in Ontario
#172 of 766 nationally
About Holy Trinity Catholic Secondary School
Holy Trinity 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 1,775 students. Publicly funded Catholic (separate) school boards in Ontario; free to attend.
Its Success Index (Canada) is 70.0 out of 100, placing it in the top 25% of secondary schools in Canada and 172nd of 766 ranked secondary schools in Ontario. Its strongest component is parent education (fewer parents without a credential) (81th percentile), and its weakest is community advantage (fewer low-income households) (54th percentile).
Other published figures: enrolment 1,775; first language not english 24%; special education 16%; identified as gifted 1%.
There are 103 schools in Oakville; Holy Trinity Catholic Secondary School ranks 36th 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%)69%
- OSSLT first-attempt pass rate (20%)88%
- FSA literacy score (25%)–
- FSA numeracy score (25%)–
- Community advantage (fewer low-income households) (10%)9%
- 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 Holy Trinity Catholic Secondary School by the official sources.
- Enrolment
- 1,775
- 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
- 88%
- % passing the Grade 10 literacy test on the first attempt.
- Low-income households
- 9%
- % 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
- 24%
- % of students whose first language is not English.
- Special education
- 16%
- % of students receiving special education services.
- Identified as gifted
- 1%
- % of students identified as gifted.
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Schools near Holy Trinity Catholic Secondary School
Closest schools by straight-line distance, with their Success Index (Canada).
St. Andrew Catholic Elementary School
Oakville · Catholic elementary · Grades JK-8
660 students · 516 m away
River Oaks Public School
Oakville · Public elementary · Grades JK-8
695 students · 801 m away
Post's Corners Public School
Oakville · Public elementary · Grades JK-8
840 students · 874 m away
St. Gregory the Great Catholic Elementary School
Oakville · Catholic elementary · Grades JK-8
500 students · 1.1 km away
Our Lady of Peace Catholic Elementary School
Oakville · Catholic elementary · Grades JK-8
400 students · 1.2 km away
Munn's Public School
Oakville · Public elementary · Grades 1-8
475 students · 1.4 km away
Oodenawi Public School
Oakville · Public elementary · Grades JK-8
1,080 students · 1.6 km away
Dr. David R. Williams Public School
Oakville · Public elementary · Grades JK-8
1,100 students · 1.7 km away
Sunningdale Public School
Oakville · Public elementary · Grades 1-8
480 students · 1.8 km away
École secondaire Gaétan Gervais
Oakville · Public secondary · Grades 9-12
170 students · 1.9 km away
Similar schools
Catholic secondary schools in Ontario with a comparable Enrolment.
St. Francis Xavier Catholic Secondary School
Milton · Catholic secondary · Grades 9-12
1,770 students
Mother Teresa Catholic Secondary School
London · Catholic secondary · Grades 9-12
1,795 students
St Edmund Campion Secondary School
Brampton · Catholic secondary · Grades 9-12
1,810 students
St. Thomas More Catholic Secondary School
Hamilton · Catholic secondary · Grades 9-12
1,810 students
St Marcellinus Secondary School
Mississauga · Catholic secondary · Grades 9-12
1,715 students
St Robert Catholic High School
Thornhill · Catholic secondary · Grades 9-12
1,705 students
Frequently asked questions
Is Holy Trinity Catholic Secondary School a good school?
Holy Trinity Catholic Secondary School has a Success Index (Canada) of 70.0 out of 100 (Top 25% of secondary schools in Canada) and ranks #172 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 Holy Trinity Catholic Secondary School rank in Ontario?
Holy Trinity Catholic Secondary School ranks #172 of 766 secondary schools in Ontario and #172 of 766 nationally on the Success Index (Canada) (2025 data).
How many students attend Holy Trinity Catholic Secondary School?
Holy Trinity Catholic Secondary School had 1,775 students in 2025.
Is Holy Trinity Catholic Secondary School a elementary school or a secondary school?
Holy Trinity Catholic Secondary School is classified as a secondary covering Grades 9-12. It is a catholic school.
What other schools are near Holy Trinity Catholic Secondary School?
There are 10 schools within 15 km of Holy Trinity Catholic Secondary School; they are listed on this page with their Success Index (Canada) and distance, and can be compared side by side.