Iona Secondary School
🇨🇦 Official data · 2025Mississauga, Ontario L5J2M4 · Dufferin-Peel CDSB
#391 of 766 secondary schools in Ontario
#391 of 766 nationally
About Iona Secondary School
Iona 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 655 students. Publicly funded Catholic (separate) school boards in Ontario; free to attend.
Its Success Index (Canada) is 49.8 out of 100, placing it in the lower 50% of secondary schools in Canada and 391st of 766 ranked secondary schools in Ontario. Its strongest component is eqao grade 9 mathematics (56th percentile), and its weakest is osslt first-attempt pass rate (40th percentile).
Other published figures: enrolment 655; first language not english 27%; special education 24%; identified as gifted 0%.
There are 320 schools in Mississauga; Iona Secondary School ranks 118th 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%)57%
- OSSLT first-attempt pass rate (20%)83%
- FSA literacy score (25%)–
- FSA numeracy score (25%)–
- Community advantage (fewer low-income households) (10%)9%
- Parent education (fewer parents without a credential) (10%)4%
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 Iona Secondary School by the official sources.
- Enrolment
- 655
- Students enrolled in the latest published year.
- EQAO Grade 9 maths
- 57%
- % at or above the provincial standard in Grade 9 mathematics.
- OSSLT pass rate
- 83%
- % 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
- 4%
- % of students whose parents have no degree, diploma or certificate.
- First language not English
- 27%
- % of students whose first language is not English.
- Special education
- 24%
- % of students receiving special education services.
- Identified as gifted
- 0%
- % of students identified as gifted.
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Schools near Iona Secondary School
Closest schools by straight-line distance, with their Success Index (Canada).
École élémentaire Horizon Jeunesse
Mississauga · Public elementary · Grades JK-6
245 students · 467 m away
St Louis School
Mississauga · Catholic elementary · Grades JK-8
185 students · 551 m away
Hillcrest Public School
Mississauga · Public elementary · Grades JK-8
295 students · 716 m away
Hillside Public School Public School
Mississauga · Public elementary · Grades JK-8
605 students · 1.3 km away
Whiteoaks Public School
Mississauga · Public elementary · Grades JK-6
475 students · 1.4 km away
Homelands Senior Public School
Mississauga · Public elementary · Grades 6-8
345 students · 1.6 km away
St Helen Separate School
Mississauga · Catholic elementary · Grades JK-8
235 students · 1.7 km away
St Christopher School
Mississauga · Catholic elementary · Grades JK-8
415 students · 1.7 km away
Sheridan Park Public School
Mississauga · Public elementary · Grades JK-6
390 students · 1.8 km away
Clarkson Secondary School
Mississauga · Public secondary · Grades 9-12
740 students · 1.8 km away
Similar schools
Catholic secondary schools in Ontario with a comparable Enrolment.
Ascension of Our Lord Secondary School
Mississauga · Catholic secondary · Grades 9-12
655 students
Holy Cross Catholic Secondary School
St Catharines · Catholic secondary · Grades 9-12
655 students
Dante Alighieri Academy
Etobicoke · Catholic secondary · Grades 9-12
655 students
École secondaire catholique L'Escale
Rockland · Catholic secondary · Grades 9-12
645 students
St Benedict Catholic Secondary School
Sudbury · Catholic secondary · Grades 9-12
645 students
Brebeuf College School
Toronto · Catholic secondary · Grades 9-12
645 students
Frequently asked questions
Is Iona Secondary School a good school?
Iona Secondary School has a Success Index (Canada) of 49.8 out of 100 (Lower 50% of secondary schools in Canada) and ranks #391 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 Iona Secondary School rank in Ontario?
Iona Secondary School ranks #391 of 766 secondary schools in Ontario and #391 of 766 nationally on the Success Index (Canada) (2025 data).
How many students attend Iona Secondary School?
Iona Secondary School had 655 students in 2025.
Is Iona Secondary School a elementary school or a secondary school?
Iona Secondary School is classified as a secondary covering Grades 9-12. It is a catholic school.
What other schools are near Iona Secondary School?
There are 10 schools within 15 km of Iona Secondary School; they are listed on this page with their Success Index (Canada) and distance, and can be compared side by side.