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School Open
Dismissal: 3:30 PM
Next 7 Days
November 2026
Coming Up
School Breaks
Holidays (No School)
The O'Fallon Township High School District 203 school calendar for the 2026-27 school year runs from Tuesday, August 11, 2026 to Thursday, May 20, 2027 in Illinois.
- •3 scheduled breaks and 5 holidays throughout the year
- •Spring break: Mar 26 – Apr 2
- •Winter break: Dec 21 – Jan 4
O'Fallon Township High School District 203 starts school 187 days later than most Illinois districts. Winter break starts 364 days later than the most common Illinois schedule.
Download the iCal file above to sync all O'Fallon Township High School District 203 dates with your phone or computer.
Frequently Asked Questions
Is O'Fallon Township High School District 203 school open today?
Yes, O'Fallon Township High School District 203 is open today. Check the weekly calendar above for upcoming school days and closures.
When is the next day off for O'Fallon Township High School District 203?
The next day off is Thanksgiving Break, starting Wednesday, November 25, 2026.
When is the first day of school for O'Fallon Township High School District 203?
The first day of school for O'Fallon Township High School District 203 in 2026-27 is Tuesday, August 11, 2026.
When is the last day of school for O'Fallon Township High School District 203?
The last day of school for O'Fallon Township High School District 203 in 2026-27 is Thursday, May 20, 2027.
When is spring break for O'Fallon Township High School District 203?
Spring break for O'Fallon Township High School District 203 is Friday, March 26, 2027 to Friday, April 2, 2027.
When is winter break for O'Fallon Township High School District 203?
Winter break for O'Fallon Township High School District 203 is Monday, December 21, 2026 to Monday, January 4, 2027.
When do students go back to school after winter break?
Students in O'Fallon Township High School District 203 return to school after winter break on Tuesday, January 5, 2027. Winter break ends on Monday, January 4, 2027.
When is Thanksgiving break for O'Fallon Township High School District 203?
Thanksgiving break for O'Fallon Township High School District 203 is Wednesday, November 25, 2026 to Friday, November 27, 2026.
How do I add O'Fallon Township High School District 203 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: October 21, 2026
Source: O'Fallon Township High School District 203 Official Calendar