⚠Unofficial calendar. Always confirm with your district before making plans. Some dates are estimated from nearby districts or past years — those are marked below.
Tri-Valley School District 49-6
South Dakota · 932 students · 2026–27 school year
Showing the 2026–27 school year. Past years & forecasts are in our API.
Winter
Dec 21 – Dec 21
Last day
May 28
Breaks & no-school days
Day off
Starts
Ends
Professional Day - No School For Students
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No School
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No School
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No School
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No School
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Winter Break
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Winter Break
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Winter Break
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Winter Break
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Winter Break
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Winter Break
Winter Break
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Winter Break
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Winter Break
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Winter Break
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Winter Break
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No School
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No School
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No School
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No School
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School dayDay offHalf dayEstimated — not yet confirmed by the district