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Summer Break
School starts Aug 18
Next 7 Days
July 2026
Coming Up
School Breaks
Holidays (No School)
The Marsh Valley Joint School District 21 school calendar for the 2026-27 school year runs from Tuesday, August 18, 2026 to Thursday, May 27, 2027 in Arimo, Idaho.
- •3 scheduled breaks and 6 holidays throughout the year
- •Spring break: Mar 29 – Mar 31
- •Winter break: Dec 21 – Dec 31
Marsh Valley Joint School District 21 starts school 364 days later than most Idaho districts. Winter break starts 364 days later than the most common Idaho schedule.
Download the iCal file above to sync all Marsh Valley Joint School District 21 dates with your phone or computer.
Frequently Asked Questions
Is Marsh Valley Joint School District 21 school open today?
No, Marsh Valley Joint School District 21 is currently on summer break. School starts Tuesday, August 18, 2026.
When is the next day off for Marsh Valley Joint School District 21?
The next day off is Monday, September 7, 2026 for Labor Day.
When is the first day of school for Marsh Valley Joint School District 21?
The first day of school for Marsh Valley Joint School District 21 in 2026-27 is Tuesday, August 18, 2026.
When is the last day of school for Marsh Valley Joint School District 21?
The last day of school for Marsh Valley Joint School District 21 in 2026-27 is Thursday, May 27, 2027.
When is spring break for Marsh Valley Joint School District 21?
Spring break for Marsh Valley Joint School District 21 is Monday, March 29, 2027 to Wednesday, March 31, 2027.
When is winter break for Marsh Valley Joint School District 21?
Winter break for Marsh Valley Joint School District 21 is Monday, December 21, 2026 to Thursday, December 31, 2026.
When do students go back to school after winter break?
Students in Marsh Valley Joint School District 21 return to school after winter break on Friday, January 1, 2027. Winter break ends on Thursday, December 31, 2026.
When is Thanksgiving break for Marsh Valley Joint School District 21?
Thanksgiving break for Marsh Valley Joint School District 21 is Monday, November 23, 2026 to Friday, November 27, 2026.
How do I add Marsh Valley Joint School District 21 calendar to my phone?
Click the "Add to Calendar" button at the top of this page to download the iCal (.ics) file. Then:
iPhone/iPad: Tap the downloaded file, then tap "Add All" to add events to your Calendar app.
Android: Open the file with Google Calendar, review the events, and tap "Import".
Google Calendar (web): Go to Settings → Import & Export → Select the .ics file → Import.
Outlook: Double-click the file or drag it into your Outlook calendar.
Apple Calendar (Mac): Double-click the file or go to File → Import → select the .ics file.
What school district is Arimo, ID in?
Arimo, Idaho is served by Marsh Valley Joint School District 21. This page shows the 2026-27 school calendar including first day, last day, breaks, and holidays.
When does school start in Arimo?
School in Arimo (Marsh Valley Joint School District 21) starts on Tuesday, August 18, 2026 for the 2026-27 school year.
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Last updated: January 3, 2026
Source: Marsh Valley Joint School District 21 Official Calendar