Big Horn County School District #4 Calendar 2026-2027
Complete holiday schedule and key dates for Big Horn County School District #4 for the 2026-2027 academic year. Official district website
School Year Timeline
Key Dates
| Event | Date(s) | Status |
|---|---|---|
| First Day of School | August 18, 2026 (Tue) | School Opens |
| Labor Day | September 7, 2026 (Mon) | No School |
| Thanksgiving Break | November 25, 2026 - November 29, 2026 | No School |
| Christmas Break | December 23, 2026 - December 31, 2026 | No School |
| New Years | January 1, 2027 - January 3, 2027 | No School |
| Easter Break | March 26, 2027 - March 31, 2027 | No School |
| Spring Break | April 1, 2027 - April 4, 2027 | No School |
| Last Day of School | May 27, 2027 (Thu) | School Closes |
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Extended Time Off
| Window | Date(s) | Length |
|---|---|---|
| Labor Day Window | Sep 4–7, 2026Districtwide no-school: Sep 4, 2026; Sep 7, 2026 · Adjacent weekend: Sep 5–6, 2026 | 4 days |
| Christmas Break Window | Dec 23, 2026–Jan 3, 2027Districtwide no-school: Dec 23, 2026–Jan 3, 2027 | 12 days |
| Easter Break Window | Mar 26–Apr 4, 2027Districtwide no-school: Mar 26–Apr 4, 2027 | 10 days |
Other Important Dates
| Event | Date(s) |
|---|---|
| 1st Quarter ends (Riverside Middle High School families) | October 14, 2026 (Wed) |
| RMHS PTC 4pm-8pm (Riverside Middle High School families; 4:00–8:00 PM) | October 20, 2026 (Tue) |
| RMHS PTC 4pm-8pm (Riverside Middle High School families; 4:00–8:00 PM) | October 22, 2026 (Thu) |
| 1st Trimester ends (Laura Irwin Elementary School families) | November 11, 2026 (Wed) |
| LIE PTC 4pm-8pm (Laura Irwin Elementary School families; 4:00–8:00 PM) | November 17, 2026 (Tue) |
| LIE PTC 4pm-8pm (Laura Irwin Elementary School families; 4:00–8:00 PM) | November 19, 2026 (Thu) |
| First Semester (2nd Quarter) ends (Riverside Middle High School families) | December 22, 2026 (Tue) |
| 2nd Trimester ends (Laura Irwin Elementary School families) | February 24, 2027 (Wed) |
| LIE PTC 4pm-8pm (Laura Irwin Elementary School families; 4:00–8:00 PM) | March 2, 2027 (Tue) |
| LIE PTC 4pm-8pm (Laura Irwin Elementary School families; 4:00–8:00 PM) | March 4, 2027 (Thu) |
| 3rd Quarter ends (Riverside Middle High School families) | March 10, 2027 (Wed) |
| RMHS PTC 4pm-8pm (Riverside Middle High School families; 4:00–8:00 PM) | March 16, 2027 (Tue) |
| RMHS PTC 4pm-8pm (Riverside Middle High School families; 4:00–8:00 PM) | March 18, 2027 (Thu) |
| 3rd Trimester ends (Laura Irwin Elementary School families) | May 27, 2027 (Thu) |
| Second Semester (4th Quarter) ends (Riverside Middle High School families) | May 27, 2027 (Thu) |
Big Horn County School District #4 Calendar 2026-2027 wyomingschoolcalendar.com
View the full 2026-2027 school year by month.
Monthly calendar12 months
Big Horn County School District #4
Big Horn County School District #4 serves Basin through Laura Irwin Elementary and Riverside Middle/High School, offering a cohesive community school sequence.
Working families access after-school academic programs through the 21st Century Community Learning Center. The district coordinates special education and digital safety education, managing student records and meal accounts through Infinite Campus.
Compared With Related Districts
Selected highlights from this district calendar and related district calendar pages.
Big Horn County School District #4 uses this Spring Break week, while Big Horn County School District #3 (March 22, 2027 - March 26, 2027) and Big Horn County School District #2 (March 22, 2027 - March 29, 2027) use different windows in the related calendar set.
Big Horn County School District #4 lists 35 teacher, planning, or student-holiday items beyond the headline break periods.
Compare key dates with other districts
Choose one or two related districts to line up major planning dates with Big Horn County School District #4.
Related Links
About This Calendar
Data Source: Big Horn County School District #4 — 2026-2027 Calendar Year - 4 Day How we verify dates
Disclaimer: This website is not affiliated with Big Horn County School District #4, any state education authority, or any official district body. While we strive for accuracy, always verify important dates with the official district website.