St Mary's Separate School
🇨🇦 Official data · 2025Brockville, Ontario K6V4N5 · CDSB of Eastern Ontario
#2667 of 3,871 elementary schools in Ontario
#2667 of 3,871 nationally
About St Mary's Separate School
St Mary's Separate School is a catholic elementary located in Brockville, in the CDSB of Eastern Ontario school board or district of Ontario, Canada. It caters for Grades 7-8. In 2025 it enrolled 175 students. Publicly funded Catholic (separate) school boards in Ontario; free to attend.
Its Success Index (Canada) is 37.5 out of 100, placing it in the lower 50% of elementary schools in Canada and 2667th of 3,871 ranked elementary schools in Ontario. Its strongest component is community advantage (fewer low-income households) (39th percentile), and its weakest is parent education (fewer parents without a credential) (36th percentile).
Other published figures: enrolment 175; first language not english 0%; special education 25%; identified as gifted 0%.
There are 15 schools in Brockville; St Mary's Separate School ranks 12th of 14 scored schools there.
Success Index (Canada) breakdown
Each component is a percentile against elementary schools across Canada.
- EQAO Grade 3 (reading, writing, maths) (20%)–
- EQAO Grade 6 (reading, writing, maths) (25%)–
- EQAO Grade 9 mathematics (25%)–
- OSSLT first-attempt pass rate (20%)–
- FSA literacy score (25%)–
- FSA numeracy score (25%)–
- Community advantage (fewer low-income households) (10%)10%
- Parent education (fewer parents without a credential) (10%)5%
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 Separate School by the official sources.
- Enrolment
- 175
- Students enrolled in the latest published year.
- Low-income households
- 10%
- % of students living in low-income households.
- Parents without a credential
- 5%
- % of students whose parents have no degree, diploma or certificate.
- First language not English
- 0%
- % of students whose first language is not English.
- Special education
- 25%
- % of students receiving special education services.
- Identified as gifted
- 0%
- % of students identified as gifted.
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Schools near St Mary's Separate School
Closest schools by straight-line distance, with their Success Index (Canada).
St Mary's High School
Brockville · Catholic secondary · Grades 9-12
385 students · 2 m away
Westminster Public School
Brockville · Public elementary · Grades JK-6
370 students · 135 m away
Thousand Islands Secondary School
Brockville · Public secondary · Grades 9-12
640 students · 713 m away
Thousand Islands Intermediate School
Brockville · Public elementary · Grades 7-8
220 students · 723 m away
BCI Intermediate School
Brockville · Public elementary · Grades 7-8
150 students · 1.2 km away
Brockville Collegiate Institute
Brockville · Public secondary · Grades 9-12
425 students · 1.2 km away
Vanier Public School
Brockville · Public elementary · Grades JK-6
250 students · 1.2 km away
St Francis Xavier Separate School
Brockville · Catholic elementary · Grades JK-6
80 students · 1.3 km away
St John Bosco Catholic School
Brockville · Catholic elementary · Grades JK-6
260 students · 1.5 km away
J L Jordan Separate School
Brockville · Catholic elementary · Grades JK-6
150 students · 1.7 km away
Similar schools
Catholic elementary schools in Ontario with a comparable Enrolment.
Our Lady of Fatima Catholic School
Belleville · Catholic elementary · Grades JK-8
175 students
St Paul Catholic School
Kingston · Catholic elementary · Grades JK-8
175 students
ÉÉC Sainte-Marguerite-Bourgeoys-Markham
Markham · Catholic elementary · Grades JK-8
175 students
École élémentaire catholique Elda-Rouleau
Alexandria · Catholic elementary · Grades JK-6
175 students
École élémentaire catholique Notre-Dame-du-Rosaire
Crysler · Catholic elementary · Grades JK-6
175 students
École élémentaire catholique Saint-Grégoire
Vankleek Hill · Catholic elementary · Grades JK-6
175 students
Frequently asked questions
Is St Mary's Separate School a good school?
St Mary's Separate School has a Success Index (Canada) of 37.5 out of 100 (Lower 50% of elementary schools in Canada) and ranks #2667 of 3,871 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 Separate School rank in Ontario?
St Mary's Separate School ranks #2667 of 3,871 elementary schools in Ontario and #2667 of 3,871 nationally on the Success Index (Canada) (2025 data).
How many students attend St Mary's Separate School?
St Mary's Separate School had 175 students in 2025.
Is St Mary's Separate School a elementary school or a secondary school?
St Mary's Separate School is classified as a elementary covering Grades 7-8. It is a catholic school.
What other schools are near St Mary's Separate School?
There are 10 schools within 15 km of St Mary's Separate School; they are listed on this page with their Success Index (Canada) and distance, and can be compared side by side.