YRDSB Invites Family and Community Members to Apply for Advisory Committees
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New 2026-2027 School Year Calendars
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Summer School Learning Opportunities
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Community Supports
Learn MoreThornlea EcoTeam
Thornlea EcoTeamEnvironmental sustainability is a way of life at Thornlea Secondary School, where students are leading…
King City S.S. Students Explore How Computer Science Supports Modern Agriculture
Students at King City Secondary School recently visited Boreal Farms to see how compute... Read More
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About the School
Welcome to Thornlea Secondary School. We are committed to working with families to support student learning, achievement and well-being. Our staff work hard to create safe, caring and inclusive learning environments and opportunities that support student success. We invite you to explore our school website to learn more about our school community.
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Connect with us
Principal
Patrick Belmonte
Grades
9-12 (Dual)
Vice-Principal
Heather Leatham, Ralph-Anthony Masciello
Bell Times
8:45 AM - 3:05 PM
Superintendent
Donna Donalds
Address
8075 Bayview Ave.
Thornhill ON, L3T 4N4
Trustee
Jenny Chen
Community
CEC West
Phone
905-889-9696, 647-795-7692
