Skip to Main Content
Archbishop O’Leary Catholic High School
Menu
close
About
Welcome Back/School Start Up Information
Welcome to O'Leary
Welcome from the Principal
O'Leary Highlight Videos
Open House
Registration Information
Register Today!
O'Leary Program Info Viewbook
School Information
Parent Information
School and Transportation Fees
School Assurance Dashboard
Catholic Faith
Calendar
Contact Us
Programs
Student Life
2026 Spartan Showdown (Feb. 5-7)
Archbishop O'Leary Spartan TV
Citadel Club
Creating Communities of Belonging
Inclusive Communities & Student Conduct Policy
Final and Diploma Exam Schedule
O'Leary Grad 2025
Student and Parent Handbook
O'Leary Morning Update
O'Leary Swag Store
School Resource Officers
Prospective Students
Upgrading Options
About
Welcome Back/School Start Up Information
Welcome to O'Leary
Welcome from the Principal
O'Leary Highlight Videos
Open House
Registration Information
Register Today!
O'Leary Program Info Viewbook
School Information
Parent Information
School and Transportation Fees
School Assurance Dashboard
Catholic Faith
Calendar
Contact Us
Programs
Student Life
2026 Spartan Showdown (Feb. 5-7)
Archbishop O'Leary Spartan TV
Citadel Club
Creating Communities of Belonging
Inclusive Communities & Student Conduct Policy
Final and Diploma Exam Schedule
O'Leary Grad 2025
Student and Parent Handbook
O'Leary Morning Update
O'Leary Swag Store
School Resource Officers
Prospective Students
Upgrading Options
search
account_circle
apps
PowerSchool
MyECSD
Outlook
OneDrive
Staff Resources
Password Reset
g_translate
Click or use space key to open language dropdown
pause_circle_filled
"Viam Veritatis Elegi" - We Will Seek the Truth
Register Now
Open House 2026
Power School
Faith Alive
Transportation
Our Lenten Journey
Pre-Enrolment for Current Students
Open House
O'Leary Grad 2025
Advanced Placement Program
Upcoming Events
{"startdate":"2026-03-13T00:00:00Z","enddate":"2026-03-14T00:00:00Z","isAllDay":true}
Professional Development Day (no classes)
{"startdate":"2026-03-30T00:00:00Z","enddate":"2026-04-07T00:00:00Z","isAllDay":true}
SPRING BREAK
{"startdate":"2026-04-26T14:00:00Z","enddate":"2026-04-26T14:30:00Z","isAllDay":false}
Celebration of the Arts @ ECSD Arts Show
{"startdate":"2026-05-04T00:00:00Z","enddate":"2026-05-09T00:00:00Z","isAllDay":true}
AP Exam Week
View Full Calendar
News
132 Avenue Construction Information
Study Abroad! Student Exchange Opportunities
Winter Weather Reminders
Black History Month
View All News
Our Mission and Vision
Catholic Faith at our School
Follow us on Instagram
