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How to Register at Thornhill Secondary School: Click one of the options below for specific instructions about how to register.
Thornhill Secondary School (TSS) is a secondary school in Thornhill, Ontario, Canada. Founded in 1955, the school is administered by the York Region District School Board system.
Thornhill S.S. Grades: 9-12 (Sem) 167 Dudley Ave. Thornhill, ON. L3T 2E5. Phone: (905) 889-5453 , (647) 795-7595. Fax: (905) 889-0360.
Thornhill Secondary School Alumni Association, Thornhill, Ontario. 1,405 likes. Serving the alumni of Thornhill Secondary School, current TSS students, and the Thornhill community.
Official account of Thornhill Secondary School. Please contact the school directly with any questions. We do not respond to DMs.
Our staff members at Thornhill are dedicated to ensuring that our students receive the best education possible. If you have concerns or need to connect with one of us, then please email us. Find the email address for the staff member you are looking below: 2023-24 Thornhill SS Staff List.
Thornhill Secondary School: BOSS Updates. 726 likes. Thornhill SS's Board of Student Senators is on a mission to keep you in the loop! Check frequently for news on events, or browse our master calendar!
