SchoolDates
Read from the district on October 8, 2026

Sublette County School District Number 9 school calendar, 2026–2027

Key dates for 2026–2027: first day of school August 17; Thanksgiving break November 25–27; winter break December 23 to January 1; spring break March 26 to April 2; last day of school May 26.

Next time off Nov 25 Thanksgiving break · November 25–27 As of October 8, 2026, the day this calendar was read
School days off this year 20 across 6 separate closures
Last day of school May 26 Wednesday
First day of school August 17; Thanksgiving break November 25–27; Winter break December 23 to January 1; Spring break March 26 to April 2; Last day of school May 26;
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Month by month

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

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
  • 10New Student Registration
  • 11–14Staff day
  • 17First 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
  • 11Early release

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
  • 15Testing
  • 21Testing
  • 22Early release
  • 28Testing

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
  • 10Testing
  • 22Early release
  • 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
  • 4Classes resume
  • 22Staff 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
  • 12Presidents Day
  • 25Testing

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
  • 18Early release
  • 26 onSpring 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
  • to 2Spring break

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
  • 26Last day
  • 27Staff day
  • 31Memorial Day
School break Holiday, no school Staff day, no students Early release Term milestone

Key dates

Key dates · 2026–2027
WhatDatesSchool daysBack to schoolSame dates in Wyoming
First day of schoolAugust 17——2 of 4
Thanksgiving breakNovember 25–273Monday, November 303 of 6
Winter breakDecember 23 to January 18Monday, January 42 of 6
Spring breakMarch 26 to April 26Monday, April 52 of 6
Last day of schoolMay 26——2 of 5
Longest closure
Winter break, December 23 to January 1 (8 school days)
One-day closures
3
Closures starting Tuesday to Thursday
2
Staff days, no students
1: Jan 22
Early-release days
4: Sep 11, Oct 22, Dec 22, Mar 18
Most days off in one month
December, 7 school days
Months with no day off
August, October and May
Longest run of school days
56, September 8 to November 24

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

Earliest last day of school of the 5 Wyoming districts we read, tied with Fremont County School District Number 25: Wednesday, May 26.

Fewest school days off of the 6 Wyoming districts we read with a complete calendar: 20.

Every date

Every published date · Sublette County School District Number 9 · 2026–2027
DateWhat it isTime offDistrict’s own wording
August 10New Student Registration—New Student Registration
August 11–14Teacher work day, no students—Teacher In-Service Days
August 12LBES Open House—LBES Open House
August 13BPES Open House—BPES Open House
August 13MS Open House—MS Open House
August 17First day of school—First Student Day
September 7Labor Day1 school dayNO SCHOOL - Labor Day Holiday
September 11Early release—Early Release FRIDAY
October 15Testing—National ACT
October 21Testing—PSAT
October 22Early release—Parent / Teacher Conferences by Appt. & Early Release
October 28Testing—Senior ACT
November 25–27Thanksgiving break3 school daysNO SCHOOL - Thanksgiving Break
December 10Testing—National ACT
December 22Early release—Early Release Day
December 23 to January 1Winter break8 school daysChristmas Break
January 4Classes resume—Students Return
January 22Teacher work day, no students1 school dayNO SCHOOL - Teacher In Service
February 12Presidents Day1 school dayPresident's Day Holiday Observed
February 25Testing—National ACT
March 18Early release—Parent / Teacher Conferences by Appt and Early Release
March 26 to April 2Spring break6 school daysNO SCHOOL - Spring Break
May 24Graduation—New Approved BPHS Graduation Day
May 26Last day of school—Last Student Day - Early Release
May 27Teacher work day, no students—NO SCHOOL - Teacher In-Service
May 31Memorial Day—Memorial Day Holiday

Sources

  1. District’s calendar: https://www.sublette9.org/apps/events/ (the source)
  2. District website: https://www.sublette9.org
  3. Calendar feed read on October 8, 2026: https://www.sublette9.org/apps/events/ical/?id=0

How these dates are read and labeled: Methodology.

Other Wyoming districts

Big Horn County School District Number 1: 23 school days off Converse County School District Number 2: 23 school days off Fremont County School District Number 14: 30 school days off Fremont County School District Number 25: 31 school days off