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Summer Break
School starts Aug 25
Next 7 Days
August 2026
Coming Up
1 this weekSchool Breaks
Holidays (No School)
The Jefferson H S school calendar for the 2026-27 school year runs from Tuesday, August 25, 2026 to Friday, May 28, 2027 in Boulder, Montana.
- •2 scheduled breaks and 4 holidays throughout the year
- •Spring break: Mar 25 – Mar 28
- •Winter break: Dec 24 – Jan 3
Jefferson H S starts school 374 days later than most Montana districts. Winter break starts 367 days later than the most common Montana schedule.
Download the iCal file above to sync all Jefferson H S dates with your phone or computer.
Frequently Asked Questions
Is Jefferson H S school open today?
No, Jefferson H S is currently on summer break. School starts Tuesday, August 25, 2026.
When is the next day off for Jefferson H S?
The next day off is Wednesday, November 25, 2026 for Thanksgiving.
When is the first day of school for Jefferson H S?
The first day of school for Jefferson H S in 2026-27 is Tuesday, August 25, 2026.
When is the last day of school for Jefferson H S?
The last day of school for Jefferson H S in 2026-27 is Friday, May 28, 2027.
When is spring break for Jefferson H S?
Spring break for Jefferson H S is Thursday, March 25, 2027 to Sunday, March 28, 2027.
When is winter break for Jefferson H S?
Winter break for Jefferson H S is Thursday, December 24, 2026 to Sunday, January 3, 2027.
When do students go back to school after winter break?
Students in Jefferson H S return to school after winter break on Monday, January 4, 2027. Winter break ends on Sunday, January 3, 2027.
When is Thanksgiving break for Jefferson H S?
Thanksgiving break dates for Jefferson H S are not yet available.
How do I add Jefferson H S 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 Boulder, MT in?
Boulder, Montana is served by Jefferson H S. This page shows the 2026-27 school calendar including first day, last day, breaks, and holidays.
When does school start in Boulder?
School in Boulder (Jefferson H S) starts on Tuesday, August 25, 2026 for the 2026-27 school year.
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Other Montana Districts
Last updated: July 14, 2026
Source: Jefferson H S Official Calendar