St Aloysius Gonzaga Secondary School
🇨🇦 Official data · 2025Mississauga, Ontario L5M6R5 · Dufferin-Peel CDSB
#159 of 766 secondary schools in Ontario
#159 of 766 nationally
About St Aloysius Gonzaga Secondary School
St Aloysius Gonzaga Secondary School is a catholic secondary located in Mississauga, in the Dufferin-Peel CDSB school board or district of Ontario, Canada. It caters for Grades 9-12. In 2025 it enrolled 1,625 students. Publicly funded Catholic (separate) school boards in Ontario; free to attend.
Its Success Index (Canada) is 71.5 out of 100, placing it in the top 25% of secondary schools in Canada and 159th 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) (60th percentile).
Other published figures: enrolment 1,625; first language not english 25%; special education 15%; identified as gifted 2%.
There are 320 schools in Mississauga; St Aloysius Gonzaga Secondary School ranks 40th of 206 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%)68%
- 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 Aloysius Gonzaga Secondary School by the official sources.
- Enrolment
- 1,625
- Students enrolled in the latest published year.
- EQAO Grade 9 maths
- 68%
- % 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
- 25%
- % of students whose first language is not English.
- Special education
- 15%
- % of students receiving special education services.
- Identified as gifted
- 2%
- % of students identified as gifted.
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Schools near St Aloysius Gonzaga Secondary School
Closest schools by straight-line distance, with their Success Index (Canada).
John Fraser Secondary School
Mississauga · Public secondary · Grades 9-12
1,715 students · 407 m away
Divine Mercy School
Mississauga · Catholic elementary · Grades JK-8
355 students · 633 m away
St. Oscar Romero School
Mississauga · Catholic elementary · Grades JK-8
· 840 m away
Credit Valley Public School
Mississauga · Public elementary · Grades JK-6
655 students · 893 m away
Middlebury Public School
Mississauga · Public elementary · Grades JK-6
580 students · 1.1 km away
Thomas Street Middle School
Mississauga · Public elementary · Grades 6-8
920 students · 1.4 km away
Erin Centre Middle School
Mississauga · Public elementary · Grades 6-8
650 students · 1.4 km away
Oscar Peterson Public School
Mississauga · Public elementary · Grades JK-6
600 students · 1.5 km away
McKinnon Public School
Mississauga · Public elementary · Grades JK-5
475 students · 1.5 km away
Artesian Drive Public School
Mississauga · Public elementary · Grades JK-6
475 students · 1.5 km away
Similar schools
Catholic secondary schools in Ontario with a comparable Enrolment.
St. Jean de Brebeuf Catholic Secondary School
Hamilton · Catholic secondary · Grades 9-12
1,615 students
St. John Henry Newman Catholic Secondary School
Stoney Creek · Catholic secondary · Grades 9-12
1,640 students
Cathedral High School
Hamilton · Catholic secondary · Grades 9-12
1,650 students
Robert F Hall Catholic Secondary School
Caledon East · Catholic secondary · Grades 9-12
1,595 students
St Theresa of Lisieux Catholic High School
Richmond Hill · Catholic secondary · Grades 9-12
1,590 students
St. Francis Xavier (9-12) Catholic School
Gloucester · Catholic secondary · Grades 9-12
1,665 students
Frequently asked questions
Is St Aloysius Gonzaga Secondary School a good school?
St Aloysius Gonzaga Secondary School has a Success Index (Canada) of 71.5 out of 100 (Top 25% of secondary schools in Canada) and ranks #159 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 Aloysius Gonzaga Secondary School rank in Ontario?
St Aloysius Gonzaga Secondary School ranks #159 of 766 secondary schools in Ontario and #159 of 766 nationally on the Success Index (Canada) (2025 data).
How many students attend St Aloysius Gonzaga Secondary School?
St Aloysius Gonzaga Secondary School had 1,625 students in 2025.
Is St Aloysius Gonzaga Secondary School a elementary school or a secondary school?
St Aloysius Gonzaga Secondary School is classified as a secondary covering Grades 9-12. It is a catholic school.
What other schools are near St Aloysius Gonzaga Secondary School?
There are 10 schools within 15 km of St Aloysius Gonzaga Secondary School; they are listed on this page with their Success Index (Canada) and distance, and can be compared side by side.