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Next 7 Days
September 2026
Coming Up
School Breaks
Holidays (No School)
The Ontario-Montclair School District school calendar for the 2026-27 school year runs from Wednesday, August 5, 2026 to Thursday, May 20, 2027 in California.
- •3 scheduled breaks and 8 holidays throughout the year
- •Spring break: Mar 29 – Apr 2
- •Winter break: Dec 18 – Jan 1
Ontario-Montclair School District starts school 359 days later than most California districts. Winter break starts 361 days later than the most common California schedule.
Download the iCal file above to sync all Ontario-Montclair School District dates with your phone or computer.
Frequently Asked Questions
Is Ontario-Montclair School District school open today?
Yes, Ontario-Montclair School District is open today. Check the weekly calendar above for upcoming school days and closures.
When is the next day off for Ontario-Montclair School District?
The next day off is Wednesday, November 11, 2026 for Veterans Day.
When is the first day of school for Ontario-Montclair School District?
The first day of school for Ontario-Montclair School District in 2026-27 is Wednesday, August 5, 2026.
When is the last day of school for Ontario-Montclair School District?
The last day of school for Ontario-Montclair School District in 2026-27 is Thursday, May 20, 2027.
When is spring break for Ontario-Montclair School District?
Spring break for Ontario-Montclair School District is Monday, March 29, 2027 to Friday, April 2, 2027.
When is winter break for Ontario-Montclair School District?
Winter break for Ontario-Montclair School District is Friday, December 18, 2026 to Friday, January 1, 2027.
When do students go back to school after winter break?
Students in Ontario-Montclair 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 Ontario-Montclair School District?
Thanksgiving break for Ontario-Montclair School District is Monday, November 23, 2026 to Friday, November 27, 2026.
How do I add Ontario-Montclair 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.
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Last updated: July 23, 2026