⚠Unofficial calendar. Always confirm with your district before making plans. Some dates are estimated from nearby districts or past years — those are marked below.
Gardiner H S
Montana · 56 students · 2026–27 school year
Showing the 2026–27 school year. Past years & forecasts are in our API.
Last day
Jun 11
Breaks & no-school days
Day off
Starts
Ends
Administrative Council Retreat Days (Start)
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Administrative Council Retreat Days (End)
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Teacher Leader Training Day
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Full Day Professional Development For Faculty And Staff (Start)
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Full Day Professional Development For Faculty And Staff (End)
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Labor Day Holiday
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Labor Day Holiday Observed
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Columbus Day/Indigenous Peoples Day Observed
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Veterans' Day Holiday Observed
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Thanksgiving Holiday (Start)
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Thanksgiving Holiday (End)
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December Vacation (Start)
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New Year'S Day Observed
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Classes Resume
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Martin Luther King Day Observed
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Presidents' Day Observed
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February Vacation (Start)
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Patriots' Day Observed
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April Vacation (Start)
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Memorial Day Holiday Observed
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Ghs Commencement
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Juneteenth Day Observed
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School dayDay offHalf dayEstimated — not yet confirmed by the district