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Weekend
Next 7 Days
October 2026
Coming Up
School Breaks
Holidays (No School)
The Riverdale Community Unit School District 100 school calendar for the 2026-27 school year runs from Wednesday, August 19, 2026 to Tuesday, May 25, 2027 in Port Byron, Illinois.
- •3 scheduled breaks and 7 holidays throughout the year
- •Spring break: Mar 15 – Mar 19
- •Winter break: Dec 21 – Jan 1
Riverdale Community Unit School District 100 starts school 195 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 Riverdale Community Unit School District 100 dates with your phone or computer.
Frequently Asked Questions
Is Riverdale Community Unit School District 100 school open today?
No, today is Saturday - school is not in session on weekends.
When is the next day off for Riverdale Community Unit School District 100?
The next day off is Monday, October 12, 2026 for Columbus Day.
When is the first day of school for Riverdale Community Unit School District 100?
The first day of school for Riverdale Community Unit School District 100 in 2026-27 is Wednesday, August 19, 2026.
When is the last day of school for Riverdale Community Unit School District 100?
The last day of school for Riverdale Community Unit School District 100 in 2026-27 is Tuesday, May 25, 2027.
When is spring break for Riverdale Community Unit School District 100?
Spring break for Riverdale Community Unit School District 100 is Monday, March 15, 2027 to Friday, March 19, 2027.
When is winter break for Riverdale Community Unit School District 100?
Winter break for Riverdale Community Unit School District 100 is Monday, December 21, 2026 to Friday, January 1, 2027.
When do students go back to school after winter break?
Students in Riverdale Community Unit School District 100 return to school after winter break on Monday, January 4, 2027. Winter break ends on Friday, January 1, 2027.
When is Thanksgiving break for Riverdale Community Unit School District 100?
Thanksgiving break for Riverdale Community Unit School District 100 is Wednesday, November 25, 2026 to Friday, November 27, 2026.
How do I add Riverdale Community Unit School District 100 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 Port Byron, IL in?
Port Byron, Illinois is served by Riverdale Community Unit School District 100. This page shows the 2026-27 school calendar including first day, last day, breaks, and holidays.
When does school start in Port Byron?
School in Port Byron (Riverdale Community Unit School District 100) starts on Wednesday, August 19, 2026 for the 2026-27 school year.
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Last updated: September 21, 2026
Source: Riverdale Community Unit School District 100 Official Calendar