Seaway District High School
🇨🇦 Official data · 2025Iroquois, Ontario K0E1K0 · Upper Canada DSB
#522 of 766 secondary schools in Ontario
#522 of 766 nationally
About Seaway District High School
Seaway District High School is a public secondary located in Iroquois, in the Upper Canada DSB school board or district of Ontario, Canada. It caters for Grades 9-12. In 2025 it enrolled 265 students. Publicly funded schools run by public school boards or districts; free to attend.
Its Success Index (Canada) is 36.5 out of 100, placing it in the lower 50% of secondary schools in Canada and 522nd of 766 ranked secondary schools in Ontario. Its strongest component is parent education (fewer parents without a credential) (93th percentile), and its weakest is eqao grade 9 mathematics (12th percentile).
Other published figures: enrolment 265; first language not english 0%; special education 35%; identified as gifted 0%.
There are 3 schools in Iroquois; Seaway District High School ranks 3rd of 3 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%)35%
- OSSLT first-attempt pass rate (20%)73%
- FSA literacy score (25%)–
- FSA numeracy score (25%)–
- Community advantage (fewer low-income households) (10%)5%
- Parent education (fewer parents without a credential) (10%)0%
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 Seaway District High School by the official sources.
- Enrolment
- 265
- Students enrolled in the latest published year.
- EQAO Grade 9 maths
- 35%
- % at or above the provincial standard in Grade 9 mathematics.
- OSSLT pass rate
- 73%
- % passing the Grade 10 literacy test on the first attempt.
- Low-income households
- 5%
- % of students living in low-income households.
- Parents without a credential
- 0%
- % 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
- 35%
- % of students receiving special education services.
- Identified as gifted
- 0%
- % of students identified as gifted.
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Schools near Seaway District High School
Closest schools by straight-line distance, with their Success Index (Canada).
Seaway Intermediate School
Iroquois · Public elementary · Grades 7-8
110 students · 49 m away
Iroquois Public School
Iroquois · Public elementary · Grades JK-6
285 students · 276 m away
St Mary-St Cecilia Catholic School
Morrisburg · Catholic elementary · Grades JK-8
245 students · 11 km away
Morrisburg Public School
Morrisburg · Public elementary · Grades JK-6
150 students · 11 km away
Similar schools
Public secondary schools in Ontario with a comparable Enrolment.
Peel Alternative North
Brampton · Public alternative · Grades 9-12
265 students
College Heights Secondary School
Guelph · Public secondary · Grades 9-12
265 students
Red Lake District High School
Red Lake · Public secondary · Grades 9-12
270 students
Katarokwi Learning Centre
Kingston · Public secondary · Grades 9-12
260 students
École secondaire publique Le Sommet
Hawkesbury · Public secondary · Grades 9-12
275 students
Elizabeth Wyn Wood Secondary Alternate
Nepean · Public alternative · Grades 9-12
255 students
Frequently asked questions
Is Seaway District High School a good school?
Seaway District High School has a Success Index (Canada) of 36.5 out of 100 (Lower 50% of secondary schools in Canada) and ranks #522 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 Seaway District High School rank in Ontario?
Seaway District High School ranks #522 of 766 secondary schools in Ontario and #522 of 766 nationally on the Success Index (Canada) (2025 data).
How many students attend Seaway District High School?
Seaway District High School had 265 students in 2025.
Is Seaway District High School a elementary school or a secondary school?
Seaway District High School is classified as a secondary covering Grades 9-12. It is a public school.
What other schools are near Seaway District High School?
There are 4 schools within 15 km of Seaway District High School; they are listed on this page with their Success Index (Canada) and distance, and can be compared side by side.