Catholic secondary · Mississauga
St. Marcellinus Catholic Secondary School
Use this Mississauga school guide to check the essentials: Grades 9–12, 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
- Grades 9–12
- Teaching language
- English
- School board
- Dufferin-Peel Catholic District School Board
- Address
- 730 Courtneypark Drive West, Mississauga, ON L5W 1L9
- Municipality
- Mississauga
School-specific context
St. Marcellinus is a Grades 9–12 Catholic school on Courtneypark Drive West in Mississauga. The school moved to its permanent campus in September 2004, with shared municipal library and athletic facilities described in its official history. Families should pay particular attention to current admission limits when researching this school.
Learning and facilities
The school describes a shared facility arrangement with the City of Mississauga, including library and athletic facilities. The board’s 2026–27 list includes Arts and Culture and Hospitality and Tourism SHSM options.
Current admission notice
The board lists limited space for new registrations in both 2026–27 and 2027–28. Confirm current capacity and your address directly with the school before making plans.
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 Mississauga?
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
- Official school and board information Source checked Oct 3, 2026
- Ontario Ministry of Education school profile Source checked Oct 3, 2026
- Official school and board information Source checked Oct 3, 2026
- Official school and board information Source checked Oct 3, 2026
- Official school and board information 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.