Name: National Science Olympiad (NSO) – NSO Level 1 – Date 1
Start: 2025-11-13T00:00:00-05:00
End: 2025-11-13T23:59:59-05:00
Location: School-based

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Month
Day

November 2025

November 11

International English Olympiad (IEO) – IEO Level 1 – Option 2

School-based

November 12

Canadian Senior and Intermediate Mathematics Contests (CSIMC) – CSIMC 2025 – Americas

University of Waterloo Waterloo, ON, Canada

November 12

International Mathematics Olympiad (IMO) – IMO Level 1 – Option 1

School-based

November 13

Canadian Senior and Intermediate Mathematics Contests (CSIMC) – CSIMC 2025 – Non-Americas

University of Waterloo Waterloo, ON, Canada

November 13

National Science Olympiad (NSO) – NSO Level 1 – Date 1

School-based

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November 2025

International English Olympiad (IEO) – IEO Level 1 – Option 2

Canadian Senior and Intermediate Mathematics Contests (CSIMC) – CSIMC 2025 – Americas

International Mathematics Olympiad (IMO) – IMO Level 1 – Option 1

Canadian Senior and Intermediate Mathematics Contests (CSIMC) – CSIMC 2025 – Non-Americas

National Science Olympiad (NSO) – NSO Level 1 – Date 1

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