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Weekend
Next 7 Days
5 days offOctober 2026
Coming Up
1 this weekSchool Breaks
Holidays (No School)
The Mount Diablo Unified School District school calendar for the 2026-27 school year runs from Thursday, August 6, 2026 to Wednesday, June 2, 2027 in Clayton, California.
- •4 scheduled breaks and 12 holidays throughout the year
- •Spring break: Apr 5 – Apr 12
- •Winter break: Dec 21 – Jan 1
Mount Diablo Unified School District starts school 360 days later than most California districts. Winter break starts 364 days later than the most common California schedule.
Download the iCal file above to sync all Mount Diablo Unified School District dates with your phone or computer.
Frequently Asked Questions
Is Mount Diablo Unified School District school open today?
No, today is Saturday - school is not in session on weekends.
When is the next day off for Mount Diablo Unified School District?
The next day off is Fall Recess, starting Monday, October 5, 2026.
When is the first day of school for Mount Diablo Unified School District?
The first day of school for Mount Diablo Unified School District in 2026-27 is Thursday, August 6, 2026.
When is the last day of school for Mount Diablo Unified School District?
The last day of school for Mount Diablo Unified School District in 2026-27 is Wednesday, June 2, 2027.
When is spring break for Mount Diablo Unified School District?
Spring break for Mount Diablo Unified School District is Monday, April 5, 2027 to Monday, April 12, 2027.
When is winter break for Mount Diablo Unified School District?
Winter break for Mount Diablo Unified School District is Monday, December 21, 2026 to Friday, January 1, 2027.
When do students go back to school after winter break?
Students in Mount Diablo Unified School District return to school after winter break on Monday, January 4, 2027. Winter break ends on Friday, January 1, 2027.
When is Thanksgiving break for Mount Diablo Unified School District?
Thanksgiving break for Mount Diablo Unified School District is Monday, October 5, 2026 to Friday, October 9, 2026.
How do I add Mount Diablo Unified School District 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 Clayton, CA in?
Clayton, California is served by Mount Diablo Unified School District. This page shows the 2026-27 school calendar including first day, last day, breaks, and holidays.
When does school start in Clayton?
School in Clayton (Mount Diablo Unified School District) starts on Thursday, August 6, 2026 for the 2026-27 school year.
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Last updated: August 28, 2026
Source: Mount Diablo Unified School District Official Calendar