St Theresa of Lisieux Catholic High School
🇨🇦 Official data · 2025Richmond Hill, Ontario L4C0E8 · York CDSB
#17 of 766 secondary schools in Ontario
#17 of 766 nationally
About St Theresa of Lisieux Catholic High School
St Theresa of Lisieux Catholic High School is a catholic secondary located in Richmond Hill, in the York CDSB school board or district of Ontario, Canada. It caters for Grades 9-12. In 2025 it enrolled 1,590 students. Publicly funded Catholic (separate) school boards in Ontario; free to attend.
Its Success Index (Canada) is 88.0 out of 100, placing it in the top 5% of secondary schools in Canada and 17th of 766 ranked secondary schools in Ontario. Its strongest component is eqao grade 9 mathematics (99th percentile), and its weakest is community advantage (fewer low-income households) (54th percentile).
Other published figures: enrolment 1,590; first language not english 43%; special education 21%; identified as gifted 9%.
There are 110 schools in Richmond Hill; St Theresa of Lisieux Catholic High School ranks 1st of 51 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%)91%
- OSSLT first-attempt pass rate (20%)97%
- 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 St Theresa of Lisieux Catholic High School by the official sources.
- Enrolment
- 1,590
- Students enrolled in the latest published year.
- EQAO Grade 9 maths
- 91%
- % at or above the provincial standard in Grade 9 mathematics.
- OSSLT pass rate
- 97%
- % 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
- 43%
- % of students whose first language is not English.
- Special education
- 21%
- % of students receiving special education services.
- Identified as gifted
- 9%
- % of students identified as gifted.
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Schools near St Theresa of Lisieux Catholic High School
Closest schools by straight-line distance, with their Success Index (Canada).
Father Henri J M Nouwen Catholic Elementary School
Richmond Hill · Catholic elementary · Grades JK-8
195 students · 374 m away
Silver Pines Public School
Richmond Hill · Public elementary · Grades JK-8
490 students · 1.0 km away
Trillium Woods Public School
Richmond Hill · Public elementary · Grades JK-8
690 students · 1.1 km away
St Mary Immaculate Catholic Elementary School
Richmond Hill · Catholic elementary · Grades JK-8
320 students · 1.8 km away
Moraine Hills Public School
Richmond Hill · Public elementary · Grades JK-8
450 students · 1.9 km away
St Marguerite D'Youville Catholic Elementary School
Richmond Hill · Catholic elementary · Grades JK-8
385 students · 1.9 km away
O M MacKillop Public School
Richmond Hill · Public elementary · Grades JK-8
245 students · 2.2 km away
Herbert H Carnegie Public School
Maple · Public elementary · Grades JK-8
595 students · 2.2 km away
Corpus Christi Catholic Elementary School
Richmond Hill · Catholic elementary · Grades JK-8
135 students · 2.3 km away
Richmond Hill High School
Richmond Hill · Public secondary · Grades 9-12
1,635 students · 2.3 km away
Similar schools
Catholic secondary schools in Ontario with a comparable Enrolment.
Robert F Hall Catholic Secondary School
Caledon East · Catholic secondary · Grades 9-12
1,595 students
St Augustine Catholic High School
Markham · Catholic secondary · Grades 9-12
1,575 students
St. Jean de Brebeuf Catholic Secondary School
Hamilton · Catholic secondary · Grades 9-12
1,615 students
St Aloysius Gonzaga Secondary School
Mississauga · Catholic secondary · Grades 9-12
1,625 students
Sacred Heart High School
Stittsville · Catholic secondary · Grades 9-12
1,555 students
Christ the King Catholic Secondary School
Georgetown · Catholic secondary · Grades 9-12
1,545 students
Frequently asked questions
Is St Theresa of Lisieux Catholic High School a good school?
St Theresa of Lisieux Catholic High School has a Success Index (Canada) of 88.0 out of 100 (Top 5% of secondary schools in Canada) and ranks #17 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 Theresa of Lisieux Catholic High School rank in Ontario?
St Theresa of Lisieux Catholic High School ranks #17 of 766 secondary schools in Ontario and #17 of 766 nationally on the Success Index (Canada) (2025 data).
How many students attend St Theresa of Lisieux Catholic High School?
St Theresa of Lisieux Catholic High School had 1,590 students in 2025.
Is St Theresa of Lisieux Catholic High School a elementary school or a secondary school?
St Theresa of Lisieux Catholic High School is classified as a secondary covering Grades 9-12. It is a catholic school.
What other schools are near St Theresa of Lisieux Catholic High School?
There are 10 schools within 15 km of St Theresa of Lisieux Catholic High School; they are listed on this page with their Success Index (Canada) and distance, and can be compared side by side.