Address: 167 Dudley Ave, Thornhill, Ontario, L3T2E5
Phone Number: 905-889-5453
Fax Number: 905-889-0360
Enrolment 2021-2022 (Preliminary): 820
Grades Available: 9-12
School Website (if available): Thornhill Secondary School
Board Name: York Region DSB (B66095)
Board Website: http://www.yrdsb.ca