Sheridan County School District #1 Calendar 2026-2027
Complete holiday schedule and key dates for Sheridan County School District #1 for the 2026-2027 academic year. Official district website
School Year Timeline
Key Dates
| Event | Date(s) | Status |
|---|---|---|
| First Day of School | August 24, 2026 (Mon) | School Opens |
| Thanksgiving Break | November 25, 2026 - November 26, 2026 | No School |
| Christmas Break | December 21, 2026 - January 4, 2027 | No School |
| Spring Break | March 15, 2027 - March 18, 2027 | No School |
| Memorial Day | May 31, 2027 (Mon) | No School |
| Last Day of School | June 4, 2027 (Fri) | School Closes |
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Extended Time Off
| Window | Date(s) | Length |
|---|---|---|
| Student Holiday Window | Sep 4–7, 2026Districtwide no-school: Sep 4, 2026; Sep 7, 2026 · Adjacent weekend: Sep 5–6, 2026 | 4 days |
| Thanksgiving Break Window | Nov 25–29, 2026Districtwide no-school: Nov 25–27, 2026 · Adjacent weekend: Nov 28–29, 2026 | 5 days |
| Christmas Break Window | Dec 18, 2026–Jan 4, 2027Districtwide no-school: Dec 18, 2026; Dec 21, 2026–Jan 4, 2027 · Adjacent weekend: Dec 19–20, 2026 | 18 days |
| Spring Break Window | Mar 12–21, 2027Districtwide no-school: Mar 12, 2027; Mar 15–19, 2027 · Adjacent weekend: Mar 13–14, 2027; Mar 20–21, 2027 | 10 days |
| Memorial Day Window | May 28–31, 2027Districtwide no-school: May 28, 2027; May 31, 2027 · Adjacent weekend: May 29–30, 2027 | 4 days |
Other Important Dates
| Event | Date(s) |
|---|---|
| BHHS Graduation (4:00–6:00 p.m.) (Big Horn High School graduating students) | May 29, 2027 (Sat) |
| TRHS Graduation (1:00–3:00 p.m.) (Tongue River High School graduating students) | May 29, 2027 (Sat) |
Sheridan County School District #1 Calendar 2026-2027 wyomingschoolcalendar.com
View the full 2026-2027 school year by month.
Monthly calendar12 months
Sheridan County School District #1
Sheridan County School District #1 serves northern Sheridan County through the Big Horn and Tongue River school communities, operating elementary, middle, and high schools in Big Horn and Tongue River Elementary in Ranchester, Middle School in Ranchester, and High School in Dayton.
Big Horn Preschool coordinates early childhood preparation with structured developmental sessions. Secondary counseling teams provide comprehensive college-prep guidance and Hathaway Scholarship planning, keeping families updated through PowerSchool.
Compared With Related Districts
Selected highlights from this district calendar and related district calendar pages.
Sheridan County School District #1 uses this Spring Break week, while Platte County School District #2 (March 22, 2027 - March 29, 2027) and Sheridan County School District #2 (March 15, 2027 - March 19, 2027) use different windows in the related calendar set.
Sheridan County School District #1 starts on this date; Platte County School District #2 (August 19, 2026) and Sheridan County School District #2 (August 25, 2026) use different first-day dates in the related calendar set.
Sheridan County School District #1 lists 39 teacher, planning, or student-holiday items beyond the headline break periods.
Sheridan County School District #1 ends on this date; Platte County School District #2 (May 27, 2027) and Platte County School District #1 (May 26, 2027) close on different dates in the related calendar set.
Compare key dates with other districts
Choose one or two related districts to line up major planning dates with Sheridan County School District #1.
Related Links
About This Calendar
Data Source: 2026-2027 Student Calendar — Option 2 How we verify dates
Disclaimer: This website is not affiliated with Sheridan County School District #1, any state education authority, or any official district body. While we strive for accuracy, always verify important dates with the official district website.