ECSD · Senior High
Archbishop O’Leary Catholic High School
10-12 · 8760 132 Ave. NW
The methodology
The data behind this score
The Roost Rating weights AEAM above PAT, plus Roost field research, capped at 95. A missing source has its weight shared across the ones that remain, never counted as a zero.
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Classes and enrolment
Typical class size
- Grades 10 to 12
- 29Typical for these grades across ECSD schools: 27from 305 classes
Each figure is the middle class size in those grades for 2025/26, among the classes whose sizes are published. A class is one teacher with one group of students, so a group with several teachers counts once per teacher, and in junior and senior high each course section counts. The ECSD figure is the middle of every ECSD school's own figure for those grades, across Alberta's release.
Students enrolled
2,144 students in 2025/26 (preliminary)
Students enrolled each school year, 2016/17 to 2025/26
- 2016/17: 1,593 students
- 2017/18: 1,605 students
- 2018/19: 1,668 students
- 2019/20: 1,823 students
- 2020/21: 1,888 students
- 2021/22: 1,897 students
- 2022/23: 1,960 students
- 2023/24: 1,973 students
- 2024/25: 2,131 students
- 2025/26: 2,144 students
Enrolment moves with boundary changes, new schools nearby, the grades a school offers and how many children live close by. Most schools here had fewer students in 2020/21, the first school year of the pandemic.
Context only: these describe the school's situation, not how well it teaches, and neither is part of the Roost Rating.
Contains information licensed under the Open Government Licence – Alberta. Source: Alberta Education and Childcare.
Class sizes as of Nov 24, 2025Enrolment 2025/26 is preliminary: Alberta replaces it with final figures later.About these figures
Enrolment
How enrolment works
- Grades
- 10-12
- Address
- 8760 132 Ave. NW
ECSD attendance areas give in-area families priority, not a guaranteed place. Archbishop O’Leary Catholic High School is your priority senior high only if your address falls inside its area — confirm yours with an address lookup.
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Where Archbishop O’Leary Catholic High School is
8760 132 Ave. NW
Your catchment boundary is set by your home address, not the school’s location — look up your address to confirm zoning.