Holy Trinity Catholic Secondary School
🇨🇦 Official data · 2025South Glengarry, Ontario K6H7S6 · CDSB of Eastern Ontario
#675 of 766 secondary schools in Ontario
#675 of 766 nationally
About Holy Trinity Catholic Secondary School
Holy Trinity Catholic Secondary School is a catholic secondary located in South Glengarry, in the CDSB of Eastern Ontario school board or district of Ontario, Canada. It caters for Grades 9-12. In 2025 it enrolled 535 students. Publicly funded Catholic (separate) school boards in Ontario; free to attend.
Its Success Index (Canada) is 18.2 out of 100, placing it in the lower 50% of secondary schools in Canada and 675th of 766 ranked secondary schools in Ontario. Its strongest component is parent education (fewer parents without a credential) (29th percentile), and its weakest is community advantage (fewer low-income households) (13th percentile).
Other published figures: enrolment 535; first language not english 15%; special education 32%; identified as gifted 0%.
There are 2 schools in South Glengarry; Holy Trinity Catholic Secondary School ranks 1st of 2 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%)41%
- OSSLT first-attempt pass rate (20%)72%
- FSA literacy score (25%)–
- FSA numeracy score (25%)–
- Community advantage (fewer low-income households) (10%)15%
- Parent education (fewer parents without a credential) (10%)6%
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
- 535
- Students enrolled in the latest published year.
- EQAO Grade 9 maths
- 41%
- % at or above the provincial standard in Grade 9 mathematics.
- OSSLT pass rate
- 72%
- % passing the Grade 10 literacy test on the first attempt.
- Low-income households
- 15%
- % of students living in low-income households.
- Parents without a credential
- 6%
- % of students whose parents have no degree, diploma or certificate.
- First language not English
- 15%
- % of students whose first language is not English.
- Special education
- 32%
- % of students receiving special education services.
- Identified as gifted
- 0%
- % 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).
Holy Trinity Catholic Elementary School
South Glengarry · Catholic elementary · Grades 7-8
230 students · 372 m away
École élémentaire catholique Marie-Tanguay
Cornwall · Catholic elementary · Grades JK-6
370 students · 2.3 km away
St Peter's School
Cornwall · Catholic elementary · Grades JK-6
265 students · 2.3 km away
École élémentaire publique Rose des Vents
Cornwall · Public elementary · Grades JK-6
590 students · 2.4 km away
St Lawrence Secondary School
Cornwall · Public secondary · Grades 9-12
505 students · 2.8 km away
St Lawrence Intermediate School
Cornwall · Public elementary · Grades 7-8
205 students · 2.8 km away
Bridgewood Public School
Cornwall · Public elementary · Grades JK-6
520 students · 2.9 km away
École secondaire publique L'Héritage
Cornwall · Public secondary · Grades 9-12
195 students · 3.9 km away
École élémentaire publique L'Héritage
Cornwall · Public elementary · Grades 7-8
125 students · 3.9 km away
École intermédiaire catholique La Citadelle
Cornwall · Catholic elementary · Grades 7-8
195 students · 4.1 km away
Similar schools
Catholic secondary schools in Ontario with a comparable Enrolment.
ÉSC Sainte-Famille
Mississauga · Catholic secondary · Grades 9-12
530 students
St Anne's Catholic Secondary School
Clinton · Catholic secondary · Grades 9-12
530 students
St Joseph's College School
Toronto · Catholic secondary · Grades 9-12
545 students
St Mother Teresa Catholic Academy
Toronto · Catholic secondary · Grades 9-12
525 students
St Michael High School
Kemptville · Catholic secondary · Grades 9-12
520 students
Notre Dame Catholic High School
Carleton Place · Catholic secondary · Grades 9-12
555 students
Frequently asked questions
Is Holy Trinity Catholic Secondary School a good school?
Holy Trinity Catholic Secondary School has a Success Index (Canada) of 18.2 out of 100 (Lower 50% of secondary schools in Canada) and ranks #675 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 #675 of 766 secondary schools in Ontario and #675 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 535 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.