⚠Unofficial calendar. Always confirm with your district before making plans. Some dates are estimated from nearby districts or past years — those are marked below.
Aviston SD 21
Illinois · 429 students · 2026–27 school year
Showing the 2026–27 school year. Past years & forecasts are in our API.
Thanksgiving
Nov 23 – Nov 24
Last day
May 27
Breaks & no-school days
Day off
Starts
Ends
Teacher Work Day
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Staff Development
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Teacher Work Day
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Labor Day
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Staff Development
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Veteran'S Day Observance
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Thanksgiving Break
Lincoln'S Birthday Observance
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Thanksgiving Break
Admissions Day Observance
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Before Christmas Day Observance
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Christmas Day Observance
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Spring Recess Observance
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New Year'S Eve Observance
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New Year'S Day Observance
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Teacher Work Day (9-12)
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Martin Luther King Day Observance
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Staff Development
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President'S Day Observance (Washington)
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Teacher/Student Holiday (K-12)
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Memorial Day Observance
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Juneteenth Observance
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School dayDay offHalf dayEstimated — not yet confirmed by the district