---
title: "High schools in Cornwall, ON: 12 locations"
url: "https://canadaservicemap.ca/places/ontario/cornwall/secondary-schools"
description: "12 high schools in Cornwall, Ontario, each with a directions link. Catholic District School Board of Eastern Ontario is the operator on record for 4 of the 12."
site: "Canada Service Map"
author: "Mahmoud Halat"
publisher: "Space & Story"
updated: "2026-10-14"
licence: "Built entirely from public data: open data and official government pages. Each record keeps the licence of its source, listed at https://canadaservicemap.ca/data."
---
# Secondary schools in Cornwall

Cornwall, Ontario

Compiled by Mahmoud Halat, updated 14 October 2026. Not a government website. The official page always has the final word.

There are 12 high schools in Cornwall on this map, from open data. Catholic District School Board of Eastern Ontario is the operator on record for 4 of the 12. Each has a directions link.

## High schools (12)

- **Cornwall Collegiate and Vocational School**: 437 Sydney Street, K6H 3H9. Operator on record: [Upper Canada District School Board](https://canadaservicemap.ca/bodies/upper-canada-district-school-board). [Directions](https://www.google.com/maps/dir/?api=1&destination=45.02286,-74.7281)
- **Cornwall Intermediate School**: 437 Sydney Street, K6H 3H9. Operator on record: [Upper Canada District School Board](https://canadaservicemap.ca/bodies/upper-canada-district-school-board). [Directions](https://www.google.com/maps/dir/?api=1&destination=45.0227,-74.7286)
- **École élémentaire publique L'Héritage**: 1111 Montréal Chemin, K6H 1E1. [Directions](https://www.google.com/maps/dir/?api=1&destination=45.01831,-74.6996)
- **École intermédiaire catholique la Citadelle**: 510 Mcconnell Avenue, K6H 4M1. [Directions](https://www.google.com/maps/dir/?api=1&destination=45.02508,-74.7145)
- **École secondaire catholique la Citadelle**: 510 Mcconnell Avenue, K6H 4M1. [Directions](https://www.google.com/maps/dir/?api=1&destination=45.02339,-74.7132)
- **École secondaire publique L'Héritage**: 1111 Montréal Chemin, K6H 1E1. [Directions](https://www.google.com/maps/dir/?api=1&destination=45.01868,-74.7002)
- **St Joseph's Secondary School**: K6J 5V9. Operator on record: [Catholic District School Board of Eastern Ontario](https://canadaservicemap.ca/bodies/catholic-district-school-board-of-eastern-ontario). [Directions](https://www.google.com/maps/dir/?api=1&destination=45.03634,-74.7506)
- **St Lawrence Intermediate School**: 1450 Second Street East, K6H 5Z8. Operator on record: [Upper Canada District School Board](https://canadaservicemap.ca/bodies/upper-canada-district-school-board). [Directions](https://www.google.com/maps/dir/?api=1&destination=45.02934,-74.698)
- **St Lawrence Secondary School**: 1450 Second Street East, K6H 5Z8. Operator on record: [Upper Canada District School Board](https://canadaservicemap.ca/bodies/upper-canada-district-school-board). [Directions](https://www.google.com/maps/dir/?api=1&destination=45.03017,-74.6982)
- **St Matthew Catholic Secondary School**: 822 Marlborough Street North, K6H 4B4. Operator on record: [Catholic District School Board of Eastern Ontario](https://canadaservicemap.ca/bodies/catholic-district-school-board-of-eastern-ontario). [Directions](https://www.google.com/maps/dir/?api=1&destination=45.03089,-74.7243)
- **St. Joseph Intermediate Catholic School**: 1500 Cumberland Street, K6J 5V9. Operator on record: [Catholic District School Board of Eastern Ontario](https://canadaservicemap.ca/bodies/catholic-district-school-board-of-eastern-ontario). [Directions](https://www.google.com/maps/dir/?api=1&destination=45.03572,-74.7511)
- **St. Matthew Catholic Elementary School**: 822 Marlborough St, K6H 4B4. Operator on record: [Catholic District School Board of Eastern Ontario](https://canadaservicemap.ca/bodies/catholic-district-school-board-of-eastern-ontario). [Directions](https://www.google.com/maps/dir/?api=1&destination=45.03076,-74.7237)

## Questions people ask

### How many high schools are in Cornwall?

This page lists 12 high schools in Cornwall, Ontario, from open data (ODEF). Open data can miss a new place or keep one that has closed, so check before you go.

### Who operates the high schools in Cornwall?

Catholic District School Board of Eastern Ontario is the operator on record for 4 of the 12. Upper Canada District School Board is on record for 4. 4 have no operator on record. Operators are matched from the source records and may be approximate.

## Data sources

- [Open Database of Educational Facilities (ODEF), version 2.1](https://www.statcan.gc.ca/en/lode/databases/odef), licence: OGL-Canada

Operators are matched from the source records and may be approximate.

## More

- [Public services in Cornwall](https://canadaservicemap.ca/places/ontario/cornwall)
- [Pharmacies](https://canadaservicemap.ca/places/ontario/cornwall/pharmacies) (25)
- [Elementary schools](https://canadaservicemap.ca/places/ontario/cornwall/elementary-schools) (11)
- [Mental health and addiction services](https://canadaservicemap.ca/places/ontario/cornwall/mental-health-services) (7)
- [Long-term care homes](https://canadaservicemap.ca/places/ontario/cornwall/long-term-care-homes) (5)
- [Labs and diagnostic imaging](https://canadaservicemap.ca/places/ontario/cornwall/labs-and-imaging) (5)
- [Clinics and community health centres](https://canadaservicemap.ca/places/ontario/cornwall/clinics) (3)
- [Libraries](https://canadaservicemap.ca/places/ontario/cornwall/libraries) (3)
- [South Glengarry](https://canadaservicemap.ca/places/ontario/south-glengarry/secondary-schools) (4)
- [North Glengarry](https://canadaservicemap.ca/places/ontario/north-glengarry/secondary-schools) (5)
- [Casselman](https://canadaservicemap.ca/places/ontario/casselman/secondary-schools) (4)

## Cite this page

Canada Service Map, "High schools in Cornwall, ON: 12 locations", updated 14 October 2026, https://canadaservicemap.ca/places/ontario/cornwall/secondary-schools