- First day of schoolAugust 4, 2026
- Labor DaySeptember 7, 2026
- Thanksgiving breakNovember 23–27, 2026
- Winter breakDecember 21, 2026 – January 1, 2027
- MLK Jr. DayJanuary 18, 2027
- Spring breakMarch 15–19, 2027
- Memorial DayMay 31, 2027
- Last day of schoolMay 27, 2027
Last updated September 18, 2026
Interactive calendar
Browse the key dates month by month — colored markers show each event.
🎒 First day: Tuesday, August 4, 2026
Calendar Dates
- New Teacher OrientationJul 27, 2026Teacher Day
- Staff Development / Teacher WorkdayJul 28 — Jul 31Teacher Day
- Staff Development / Teacher WorkdayAug 1 — Aug 3Teacher Day
- 1st Grading Period BeginsAug 4, 2026Grading
- First Day of InstructionAug 4, 2026School Opens
- Labor DaySep 7, 2026No School
- Staff Development / Teacher WorkdaySep 18, 2026Teacher Day
- 1st Grading Period EndsOct 8, 2026Grading
- Staff Development / Teacher WorkdayOct 9, 2026Teacher Day
- 2nd Grading Period BeginsOct 12, 2026Grading
- Staff Development / Teacher WorkdayOct 16, 2026Teacher Day
- Staff Development / Teacher WorkdayOct 30, 2026Teacher Day
- Staff Development / Teacher WorkdayNov 13, 2026Teacher Day
- Early ReleaseNov 20, 2026Early Release
- Thanksgiving BreakNov 23 — Nov 27No School
- Staff Development / Teacher WorkdayDec 11, 2026Teacher Day
- 2nd Grading Period EndsDec 17, 2026Grading
- Early ReleaseDec 18, 2026Early Release
- Winter BreakDec 21 — Dec 31No School
- Winter BreakJan 1, 2027No School
- Staff Development / Teacher WorkdayJan 4 — Jan 7Teacher Day
- 3rd Grading Period BeginsJan 11, 2027Grading
- Martin Luther King DayJan 18, 2027No School
- Staff Development / Teacher WorkdayJan 22, 2027Teacher Day
- Staff Development / Teacher WorkdayJan 29, 2027Teacher Day
- Staff Development / Teacher WorkdayFeb 12, 2027Teacher Day
- Staff Development / Teacher WorkdayFeb 26, 2027Teacher Day
- Staff Development / Teacher WorkdayMar 5, 2027Teacher Day
- 3rd Grading Period EndsMar 11, 2027Grading
- Early ReleaseMar 12, 2027Early Release
- Spring BreakMar 15 — Mar 19No School
- 4th Grading Period BeginsMar 22, 2027Grading
- Good FridayMar 26, 2027No School
- Staff Development / Teacher WorkdayApr 2, 2027Teacher Day
- Staff Development / Teacher WorkdayApr 9, 2027Teacher Day
- State Testing WindowApr 12 — Apr 16Event
- 4th Grading Period EndsMay 27, 2027Grading
- Early ReleaseMay 27, 2027Early Release
- Last Day of InstructionMay 27, 2027Event
- Staff Development / Teacher WorkdayMay 28, 2027Teacher Day
- GraduationMay 28, 2027Event
- Memorial DayMay 31, 2027No School
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Frequently asked questions
When is the first day of school for Onalaska ISD in 2026-2027?
The first day of school for Onalaska ISD is Tuesday, August 4, 2026.
When is the last day of school for Onalaska ISD in 2026-2027?
The last day of school for Onalaska ISD is Thursday, May 27, 2027.
When is Thanksgiving break for Onalaska ISD?
Onalaska ISD has Thanksgiving break from November 23 through 27, 2026.
When is winter break for Onalaska ISD?
Onalaska ISD's winter break runs from December 21 through January 1.
When is spring break for Onalaska ISD in 2026-2027?
Onalaska ISD's spring break is March 15 through 19, 2027.
Does Onalaska ISD have school on Martin Luther King Jr. Day?
No. Onalaska ISD is closed for Martin Luther King Jr. Day on Monday, January 18, 2027.
Does Onalaska ISD have school on Labor Day?
No. Onalaska ISD is closed for Labor Day on Monday, September 7, 2026.
Does Onalaska ISD have school on Memorial Day?
No. Onalaska ISD is closed for Memorial Day on Monday, May 31, 2027.
