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School Open
Dismissal: 3:30 PM
Next 7 Days
April 2026
Coming Up
School Breaks
Holidays (No School)
The Mason City Community Unit School District 123 school calendar for the 2025-26 school year runs from Tuesday, August 26, 2025 to Thursday, May 28, 2026 in Illinois.
- •3 scheduled breaks and 2 holidays throughout the year
- •Spring break: Mar 9 – Mar 13
- •Winter break: Dec 24 – Jan 2
Mason City Community Unit School District 123 starts school 163 days earlier than most Illinois districts.
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?
Yes, Mason City Community Unit School District 123 is open today. Check the weekly calendar above for upcoming school days and closures.
When is the next day off for Mason City Community Unit School District 123?
The next day off is Monday, May 25, 2026 for Memorial 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 2025-26 is Tuesday, August 26, 2025.
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 2025-26 is Thursday, May 28, 2026.
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 9, 2026 to Friday, March 13, 2026.
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 24, 2025 to Friday, January 2, 2026.
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 5, 2026. Winter break ends on Friday, January 2, 2026.
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 26, 2025 to Friday, November 28, 2025.
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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Other Illinois Districts
Last updated: December 19, 2025
Source: Mason City Community Unit School District 123 Official Calendar