---
title: "High schools in Ajax, ON: 5 locations"
url: "https://canadaservicemap.ca/places/ontario/ajax/secondary-schools"
description: "5 high schools in Ajax, Ontario, each with its address, its operator on record and a directions link. From open data (ODEF), updated 14 October 2026."
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 Ajax

Ajax, Ontario

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

There are 5 high schools in Ajax on this map, from open data. Durham District School Board is the operator on record for 3 of the 5. Each has its address and a directions link.

## High schools (5)

- **Ajax High School**: 105 Bayly St E, L1S 1P2. Operator on record: [Durham District School Board](https://canadaservicemap.ca/bodies/durham-district-school-board). [Directions](https://www.google.com/maps/dir/?api=1&destination=43.84436,-79.0138)
- **Archbishop Denis O'Connor Catholic High School**: 80 Mandrake St, L1S 5H4. Operator on record: [Durham Catholic District School Board](https://canadaservicemap.ca/bodies/durham-catholic-district-school-board). [Directions](https://www.google.com/maps/dir/?api=1&destination=43.8581,-79.02)
- **J Clarke Richardson Collegiate Institute**: 1355 Harwood Ave, L1T 4G8. Operator on record: [Durham District School Board](https://canadaservicemap.ca/bodies/durham-district-school-board). [Directions](https://www.google.com/maps/dir/?api=1&destination=43.88376,-79.027)
- **Notre Dame Catholic Secondary School**: 1375 Harwood Ave N, L1T 4G8. Operator on record: [Durham Catholic District School Board](https://canadaservicemap.ca/bodies/durham-catholic-district-school-board). [Directions](https://www.google.com/maps/dir/?api=1&destination=43.8846,-79.028)
- **Pickering High School**: 180 Church St N, L1T 2W7. Operator on record: [Durham District School Board](https://canadaservicemap.ca/bodies/durham-district-school-board). [Directions](https://www.google.com/maps/dir/?api=1&destination=43.85752,-79.0574)

## Questions people ask

### How many high schools are in Ajax?

This page lists 5 high schools in Ajax, 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 Ajax?

Durham District School Board is the operator on record for 3 of the 5. Durham Catholic District School Board is on record for 2. 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 Ajax](https://canadaservicemap.ca/places/ontario/ajax)
- [Pharmacies](https://canadaservicemap.ca/places/ontario/ajax/pharmacies) (36)
- [Elementary schools](https://canadaservicemap.ca/places/ontario/ajax/elementary-schools) (33)
- [Labs and diagnostic imaging](https://canadaservicemap.ca/places/ontario/ajax/labs-and-imaging) (14)
- [Clinics and community health centres](https://canadaservicemap.ca/places/ontario/ajax/clinics) (11)
- [Mental health and addiction services](https://canadaservicemap.ca/places/ontario/ajax/mental-health-services) (9)
- [Long-term care homes](https://canadaservicemap.ca/places/ontario/ajax/long-term-care-homes) (6)
- [Private schools](https://canadaservicemap.ca/places/ontario/ajax/private-schools) (6)
- [Libraries](https://canadaservicemap.ca/places/ontario/ajax/libraries) (4)
- [Community and recreation centres](https://canadaservicemap.ca/places/ontario/ajax/community-centres) (4)
- [Pickering](https://canadaservicemap.ca/places/ontario/pickering/secondary-schools) (5)
- [Whitby](https://canadaservicemap.ca/places/ontario/whitby/secondary-schools) (10)
- [Oshawa](https://canadaservicemap.ca/places/ontario/oshawa/secondary-schools) (11)
- [Markham](https://canadaservicemap.ca/places/ontario/markham/secondary-schools) (15)
- [Clarington](https://canadaservicemap.ca/places/ontario/clarington/secondary-schools) (10)

## Cite this page

Canada Service Map, "High schools in Ajax, ON: 5 locations", updated 14 October 2026, https://canadaservicemap.ca/places/ontario/ajax/secondary-schools