Missoula High School District Calendar 2026-2027

Complete holiday schedule and key dates for Missoula High School District for the 2026-2027 academic year. Official district website

Download PDF Google Cal Apple Cal

Key Dates — Missoula County Public Schools 2026-2027 School Calendar — Big Sky, Hellgate, Sentinel

Event	Date(s)	Status
Labor Day	September 7, 2026 (Mon)	No School
Thanksgiving Vacation	November 25, 2026 - November 27, 2026	No School
Winter Vacation	December 21, 2026 - January 1, 2027	No School
Martin L. King Holiday	January 18, 2027 (Mon)	No School
Presidents’ Day Holiday	February 15, 2027 (Mon)	No School
Spring Break	April 5, 2027 - April 9, 2027	No School
Memorial Day Holiday	May 31, 2027 (Mon)	No School
Last Day of School	June 10, 2027 (Thu)	School Closes

Spot an error? Help us keep this calendar accurate.

No-School Periods

Period	Date(s)	Length
Student Holiday Window	Oct 15–18, 2026Districtwide no-school: Oct 15–16, 2026 · Adjacent weekend: Oct 17–18, 2026	4 days
Thanksgiving Vacation Window	Nov 25–29, 2026Districtwide no-school: Nov 25–27, 2026 · Adjacent weekend: Nov 28–29, 2026	5 days
Winter Vacation Window	Dec 19, 2026–Jan 3, 2027Districtwide no-school: Dec 21, 2026–Jan 1, 2027 · Adjacent weekend: Dec 19–20, 2026; Jan 2–3, 2027	16 days
Spring Break Window	Apr 3–11, 2027Districtwide no-school: Apr 5–9, 2027 · Adjacent weekend: Apr 3–4, 2027; Apr 10–11, 2027	9 days

Other Important Dates — Missoula County Public Schools 2026-2027 School Calendar — Big Sky, Hellgate, Sentinel

Event	Date(s)
1st Quarter ends (Grades 9–12 at Big Sky, Hellgate, and Sentinel high schools)	October 30, 2026 (Fri)
1st Semester ends (Grades 9–12 at Big Sky, Hellgate, and Sentinel high schools)	January 22, 2027 (Fri)
2nd Quarter ends (Grades 9–12 at Big Sky, Hellgate, and Sentinel high schools)	January 22, 2027 (Fri)
3rd Quarter ends (Grades 9–12 at Big Sky, Hellgate, and Sentinel high schools)	March 26, 2027 (Fri)
Graduation Big Sky, Hellgate, Sentinel (Grades 9–12 at Big Sky, Hellgate, and Sentinel high schools)	June 5, 2027 (Sat)
Last Day of School - 12:00 p.m. (Noon) - End of 4th Quarter and 2nd Semester (Grades 9–12 at Big Sky, Hellgate, and Sentinel high schools)	June 10, 2027 (Thu)

Missoula High School District Missoula County Public Schools 2026-2027 School Calendar — Big Sky, Hellgate, Sentinel 2026-2027 montanaschoolcalendar.com

View this calendar option by month.

Monthly calendar12 months

School Day

Weekend

Holiday

School Break

Missoula High School District

Missoula High School District provides secondary education within Missoula County Public Schools, operating Big Sky High School, Hellgate High School, Sentinel High School, Seeley-Swan High School, and Willard Alternative High School.

The high school curriculum features extensive Advanced Placement courses, career-technical sequences, fine arts, and dual-credit college partnerships, supported by a centralized scholarship database. Families manage student schedules, bus transit, and dining accounts via Infinite Campus and district portals.

Compared With Related Districts

This comparison uses the default instance shown in statewide summaries: Missoula County Public Schools 2026-2027 School Calendar — Big Sky, Hellgate, Sentinel.

Montana Spring Break splitApril 5, 2027 - April 9, 2027

Missoula High School District uses this Spring Break week, while Monforton Elementary School District (March 15, 2027 - March 19, 2027) and Polson Elementary School District (March 29, 2027 - April 2, 2027) use different windows in the related calendar set.

Later last dayJune 10, 2027

Missoula High School District ends on this date; Monforton Elementary School District (June 4, 2027) and Miles City Elementary School District (May 28, 2027) close on different dates in the related calendar set.

Compare key dates with other districts

Comparisons use each district’s labeled default calendar instance.

Other district Optional second district

Select at least one other district.

About This Calendar

Data sources: Each calendar option above identifies its own official source and update date. How we verify dates.

Disclaimer: This independent site is not affiliated with Missoula High School District or any state education authority. Always verify important dates and school assignments with the district.