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School Open
Dismissal: 3:30 PM
Next 7 Days
November 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 Wednesday, August 19, 2026 to Thursday, May 27, 2027 in Arimo, Idaho.
- •3 scheduled breaks and 5 holidays throughout the year
- •Spring break: Apr 5 – Apr 8
- •Winter break: Dec 21 – Jan 1
Marsh Valley Joint School District 21 starts school 365 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?
Yes, Marsh Valley Joint School District 21 is open today. Check the weekly calendar above for upcoming school days and closures.
When is the next day off for Marsh Valley Joint School District 21?
The next day off is Thanksgiving Break, starting Wednesday, November 25, 2026.
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 Wednesday, August 19, 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, April 5, 2027 to Thursday, April 8, 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 Friday, January 1, 2027.
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 Monday, January 4, 2027. Winter break ends on Friday, January 1, 2027.
When is Thanksgiving break for Marsh Valley Joint School District 21?
Thanksgiving break for Marsh Valley Joint School District 21 is Wednesday, November 25, 2026 to Thursday, November 26, 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 Wednesday, August 19, 2026 for the 2026-27 school year.
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Last updated: October 11, 2026
Source: Marsh Valley Joint School District 21 Official Calendar