SchoolDates
Read from the district on October 8, 2026

Big Horn County School District Number 1 school calendar, 2026–2027

Key dates for 2026–2027: first day of school August 26; Thanksgiving break November 25–27; winter break and one more day off December 23 to January 4; spring break March 26–30; last day of school May 28.

Next time off Oct 16 No school · October 16–19 As of October 8, 2026, the day this calendar was read
School days off this year 23 across 10 separate closures
Last day of school May 28 Friday
First day of school August 26; Thanksgiving break November 25–27; Winter break + 1 more day off December 23 to January 4; Spring break March 26–30; Last day of school May 28;
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Month by month

Days off: school breaks, holidays and staff days. Not days off: term milestones.

July 2026

SMTWTFS
28
29
30
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
1
  • 4July 4

August 2026

SMTWTFS
26
27
28
29
30
31
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
1
2
3
4
5
  • 17–18New Teacher Orientation
  • 18–25Staff day
  • 26First day

September 2026

SMTWTFS
30
31
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
1
2
3
  • 7Labor Day
  • 21Staff day

October 2026

SMTWTFS
27
28
29
30
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
  • 16No school
  • 19Staff day

November 2026

SMTWTFS
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
1
2
3
4
5
  • 25–27Thanksgiving break

December 2026

SMTWTFS
29
30
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
1
2
  • 22Semester ends
  • 23 onWinter break

January 2027

SMTWTFS
27
28
29
30
31
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
1
2
3
4
5
6
  • to 1Winter break
  • 4Staff day

February 2027

SMTWTFS
31
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
1
2
3
4
5
6
  • 8Staff day
  • 26No school

March 2027

SMTWTFS
28
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
1
2
3
  • 5No school
  • 26–30Spring break

April 2027

SMTWTFS
28
29
30
31
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
1
  • 12Staff day

May 2027

SMTWTFS
25
26
27
28
29
30
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
1
2
3
4
5
  • 24Graduation
  • 25Graduation
  • 28Last day

June 2027

SMTWTFS
30
31
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
1
2
3
  • 19Juneteenth
School break Holiday, no school Staff day, no students Term milestone

Key dates

Key dates · 2026–2027
WhatDatesSchool daysBack to schoolSame dates in Wyoming
First day of schoolAugust 26——1 of 4
Thanksgiving breakNovember 25–273Monday, November 303 of 6
Winter break + 1 more day offDecember 23 to January 49Tuesday, January 52 of 6
Spring breakMarch 26–303Wednesday, March 311 of 6
Last day of schoolMay 28——1 of 5
Longest closure
Winter break + 1 more day off, December 23 to January 4 (9 school days)
One-day closures
6
Closures starting Tuesday to Thursday
2
Staff days, no students
5: Sep 21, Oct 19, Jan 4, Feb 8, Apr 12
Early-release days
none published
Most days off in one month
December, 7 school days
Months with no day off
August and May
Longest run of school days
34, April 13 to May 28

Shortest winter break of the 6 Wyoming districts we read, tied with Sublette County School District Number 9: 8 school days, December 23 to January 1.

Every date

Every published date · Big Horn County School District Number 1 · 2026–2027
DateWhat it isTime offDistrict’s own wording
July 4Independence Day—Independence Day
August 17–18New Teacher Orientation—New Teacher Orientation
August 18–25Teacher work day, no students—Teacher In-Service
August 26First day of school—First Day of Classes
September 7Labor Day1 school dayLabor Day, No School
September 21Teacher work day, no students1 school dayIn-Service, No School
October 16No school1 school dayNo School
October 19Teacher work day, no students1 school dayIn-Service, No School
November 25–27Thanksgiving break3 school daysNo School
December 22End of semester—End of 1st Semester
December 23 to January 1Winter break8 school daysNo School-Winter Break
January 4Teacher work day, no students1 school dayIn-Service, No School
February 8Teacher work day, no students1 school dayIn-Service, No School
February 26No school1 school dayNo School
March 5No school1 school dayNo School
March 26–30Spring break3 school daysNo School
April 12Teacher work day, no students1 school dayIn-Service, No School
May 24Graduation—Graduation BHS @7:00pm
May 25Graduation—Graduation RMHS @ 7:00 pm
May 28Last day of school—Last day for Students/Staff
June 19Juneteenth—Juneteenth

Sources

  1. District’s calendar: https://www.bighorn1.com/events (the source)
  2. District website: https://www.bighorn1.com
  3. Calendar feed read on October 8, 2026: https://thrillshare-cmsv2.services.thrillshare.com/api/v4/o/17453/cms/events

How these dates are read and labeled: Methodology.

Other Wyoming districts

Converse County School District Number 2: 23 school days off Sublette County School District Number 9: 20 school days off Fremont County School District Number 14: 30 school days off Fremont County School District Number 25: 31 school days off