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Weekend
Next 7 Days
October 2026
Coming Up
School Breaks
Holidays (No School)
The Mason City Community Unit School District 123 school calendar for the 2026-27 school year runs from Monday, August 24, 2026 to Thursday, May 27, 2027 in Illinois.
- •3 scheduled breaks and 6 holidays throughout the year
- •Spring break: Mar 15 – Mar 19
- •Winter break: Dec 23 – Jan 1
Mason City Community Unit School District 123 starts school 200 days later than most Illinois districts. Winter break starts 366 days later than the most common Illinois schedule.
Download the iCal file above to sync all Mason City Community Unit School District 123 dates with your phone or computer.
Frequently Asked Questions
Is Mason City Community Unit School District 123 school open today?
No, today is Saturday - school is not in session on weekends.
When is the next day off for Mason City Community Unit School District 123?
The next day off is Friday, October 23, 2026 for No School / Teacher Work Day.
When is the first day of school for Mason City Community Unit School District 123?
The first day of school for Mason City Community Unit School District 123 in 2026-27 is Monday, August 24, 2026.
When is the last day of school for Mason City Community Unit School District 123?
The last day of school for Mason City Community Unit School District 123 in 2026-27 is Thursday, May 27, 2027.
When is spring break for Mason City Community Unit School District 123?
Spring break for Mason City Community Unit School District 123 is Monday, March 15, 2027 to Friday, March 19, 2027.
When is winter break for Mason City Community Unit School District 123?
Winter break for Mason City Community Unit School District 123 is Wednesday, December 23, 2026 to Friday, January 1, 2027.
When do students go back to school after winter break?
Students in Mason City Community Unit School District 123 return to school after winter break on Monday, January 4, 2027. Winter break ends on Friday, January 1, 2027.
When is Thanksgiving break for Mason City Community Unit School District 123?
Thanksgiving break for Mason City Community Unit School District 123 is Wednesday, November 25, 2026 to Friday, November 27, 2026.
How do I add Mason City Community Unit School District 123 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: September 13, 2026
Source: Mason City Community Unit School District 123 Official Calendar