| Principal |
Mr. B. Berman |
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| Vice-Principals |
Ms. S. Hetherington |
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Ms. S. Smullens |
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| School Office |
Thornhill Secondary School |
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167 Dudley Avenue |
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Thornhill, Ontario |
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L3T 2E5 |
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| Telephone: |
905-889-5453 |
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| Fax: |
905-889-0360 |
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| Attendance Office: |
Ext 303 |
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| Guidance Office: |
Ext 304 |
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| Main Office Reception: |
Ext 301 |
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