Catholic elementary · Markham
All Saints Catholic Elementary School
Use this Markham school guide to check the essentials: Kindergarten–Grade 8, English and the school’s official enrolment information. Keep your child’s needs and the exact home address at the centre of the decision.
- Grades
- Kindergarten–Grade 8
- Teaching language
- English
- School board
- York Catholic District School Board
- Address
- 130 Castlemore Ave, Unionville L6C 2P9
- Municipality
- Markham
School-specific context
All Saints Catholic Elementary School is located on Castlemore Avenue in Unionville, within Markham. It offers the Kindergarten to Grade 8 years through the York Catholic District School Board. Use this guide to compare the school’s historical academic result with practical information about its location and official enrolment process.
Markham school
This is the Unionville elementary campus at 130 Castlemore Avenue, distinct from other schools named All Saints.
Planning a move
The development listings relate to Markham as a municipality. Check a proposed address with York Catholic before relying on a school assignment.
BEFORE YOU CHOOSE A HOME
Check the address.
Confirm the program.
A nearby home or a shared municipality does not guarantee a place. Ask the board about attendance boundaries and the school about any separate entry requirements.
Considering a home in Markham?
Explore the municipality once you have checked the school’s entry rules. These searches do not establish distance, school boundaries, transportation or admission.
Official sources and check dates
- York Catholic school directory — grades, address and programs Source checked Oct 3, 2026
- Official school website Source checked Oct 3, 2026
- York Catholic admissions and registration Source checked Oct 3, 2026
- Fraser Institute 2025 report — 2023/2024 results Source checked Oct 3, 2026
These guides use AI-assisted research and dated public source records. A source check is not a school visit or a personal assessment. For a correction, choose a team member to contact.