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2025-10-02 (Thu)
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Yom Kippur (School Closed) [Columbia Secondary School]
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2025-10-06 (Mon)
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Staff Meeting ( HS/AM - MS/PM) [Columbia Secondary School]
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2025-10-13 (Mon)
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Indigenous Peoples' Day (School Closed) [Columbia Secondary School]
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2025-10-16 (Thu)
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CSS Hispanic Heritage Showcase [Columbia Secondary School]
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2025-10-17 (Fri)
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CSS Hispanic Heritage Showcase [Columbia Secondary School]
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2025-10-20 (Mon)
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Diwali (Schools Closed) [Columbia Secondary School]
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2025-10-24 (Fri)
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MS Jazz @ Lincoln Center [Columbia Secondary School]
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2025-10-27 (Mon)
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Staff Meeting (HS/AM - MS/PM) [Columbia Secondary School]
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