CBE · Senior High
RegularNelson Mandela High School
10-12 · 45 Saddletowne Circle NE Calgary, AB T3J 4W3
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
- 33Typical for these grades across CBE schools: 31from 242 classesNot counted above: 1 class with fewer than 10 students (Alberta does not publish its size).
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 CBE figure is the middle of every CBE school's own figure for those grades, across Alberta's release.
Students enrolled
1,989 students in 2025/26 (preliminary)
Students enrolled each school year, 2016/17 to 2025/26
- 2016/17: 1,178 students
- 2017/18: 1,738 students
- 2018/19: 1,748 students
- 2019/20: 1,818 students
- 2020/21: 1,868 students
- 2021/22: 1,861 students
- 2022/23: 1,850 students
- 2023/24: 1,866 students
- 2024/25: 1,932 students
- 2025/26: 1,989 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
- Programs
- Regular
- Address
- 45 Saddletowne Circle NE Calgary, AB T3J 4W3
- Neighbourhood
- Martindale (location, not catchment)
CBE schools are assigned by home address. Nelson Mandela High School is the designated senior high only if your address falls inside its catchment — confirm yours with an address lookup.
- Classes & supports
- Advanced Placement
- English Language Learners
- International Certificate
- Paced Learning Program
From the school's own CBE page — care arrangements and class placements change; confirm with the school before you decide.
Register through the Calgary Board of Education.
Where Nelson Mandela High School is
45 Saddletowne Circle NE Calgary, AB T3J 4W3
Your catchment boundary is set by your home address, not the school’s location — look up your address to confirm zoning.
Sources for Nelson Mandela High School: Official school page (CBE) · Survey source (SIRR, PDF) · School Development Plan (PDF)
Last updated Jun 2026 · How we score schools