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School Open
Dismissal: 3:30 PM
Next 7 Days
April 2026
Coming Up
School Breaks
Holidays (No School)
The Jefferson County School District R-1 school calendar for the 2025-26 school year runs from Tuesday, August 19, 2025 to Thursday, May 28, 2026 in Aspen Park, Colorado.
- •9 scheduled breaks and 8 holidays throughout the year
- •Spring break: Mar 23 – Mar 27
- •Winter break: Dec 22 – Jan 6
Jefferson County School District R-1 starts school around the same time as most Colorado districts. Winter break matches the most common Colorado schedule, starting 12/22.
Download the iCal file above to sync all Jefferson County School District R-1 dates with your phone or computer.
Frequently Asked Questions
Is Jefferson County School District R-1 school open today?
Yes, Jefferson County School District R-1 is open today. Check the weekly calendar above for upcoming school days and closures.
When is the next day off for Jefferson County School District R-1?
The next day off is Potential Snow Make-Up / Teacher Staff Development, starting Friday, April 24, 2026.
When is the first day of school for Jefferson County School District R-1?
The first day of school for Jefferson County School District R-1 in 2025-26 is Tuesday, August 19, 2025.
When is the last day of school for Jefferson County School District R-1?
The last day of school for Jefferson County School District R-1 in 2025-26 is Thursday, May 28, 2026.
When is spring break for Jefferson County School District R-1?
Spring break for Jefferson County School District R-1 is Monday, March 23, 2026 to Friday, March 27, 2026.
When is winter break for Jefferson County School District R-1?
Winter break for Jefferson County School District R-1 is Monday, December 22, 2025 to Tuesday, January 6, 2026.
When do students go back to school after winter break?
Students in Jefferson County School District R-1 return to school after winter break on Wednesday, January 7, 2026. Winter break ends on Tuesday, January 6, 2026.
When is Thanksgiving break for Jefferson County School District R-1?
Thanksgiving break for Jefferson County School District R-1 is Monday, October 13, 2025 to Monday, October 13, 2025.
How do I add Jefferson County School District R-1 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 Aspen Park, CO in?
Aspen Park, Colorado is served by Jefferson County School District R-1. This page shows the 2025-26 school calendar including first day, last day, breaks, and holidays.
When does school start in Aspen Park?
School in Aspen Park (Jefferson County School District R-1) starts on Tuesday, August 19, 2025 for the 2025-26 school year.
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Other Colorado Districts
Last updated: December 18, 2025
Source: Jefferson County School District R-1 Official Calendar