SchoolDates
Read from the district on October 8, 2026

Columbia Community Unit School District 4 school calendar, 2026–2027

Key dates for 2026–2027: first day of school August 13; Thanksgiving break November 25–27; winter break December 21 to January 4; spring break March 22–26; last day of school May 28.

Next time off Oct 9 Columbus Day / Indigenous Peoples’ Day + 1 more day off · October 9–12 As of October 8, 2026, the day this calendar was read
School days off this year 27 across 10 separate closures
Last day of school May 28 Friday
First day of school August 13; Thanksgiving break November 25–27; Winter break December 21 to January 4; Spring break March 22–26; Last day of school May 28;
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Month by month

Days off: school breaks and holidays. 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
  • 13First day
  • 19Early release
  • 26Early release

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
  • 2Early release
  • 7Labor Day
  • 9Early release
  • 16Early release
  • 23Early release
  • 30Early 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
  • 5CHS Open House
  • 7Early release
  • 9No school
  • 12Columbus Day / Indigenous Peoples’ Day
  • 14Early release
  • 21Early release
  • 23No school
  • 28Early release

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
  • 4Early release
  • 11Veterans Day
  • 18Early release
  • 25–27Thanksgiving break
  • 30Classes resume

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
  • 2Early release
  • 9Early release
  • 16Early release
  • 21 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 4Winter break
  • 5Classes resume
  • 6Early release
  • 13Early release
  • 18MLK Day
  • 20Early release
  • 27Early release

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
  • 3Early release
  • 10Early release
  • 15Presidents Day
  • 17Early release
  • 24Early release

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
  • 1No school
  • 3Early release
  • 10Early release
  • 17Early release
  • 22–26Spring break
  • 29Classes resume
  • 31Early release

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
  • 7Early release
  • 14Early release
  • 21Early release
  • 28Early release
  • 30Early release

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
  • 5Early release
  • 12Early release
  • 19Early release
  • 21Early release
  • 26Early release
  • 28Last day
School break Holiday, no school Early release Term milestone

Key dates

Key dates · 2026–2027
WhatDatesSchool daysBack to schoolSame dates in Illinois
First day of schoolAugust 13——6 of 34 · Illinois first day of school 2026, by district
Thanksgiving breakNovember 25–273Monday, November 3024 of 38 · Illinois Thanksgiving break 2026, by district
Winter breakDecember 21 to January 411Tuesday, January 517 of 38 · Illinois winter break 2026–27, by district
Spring breakMarch 22–265Monday, March 297 of 40 · Illinois spring break 2027, by district
Last day of schoolMay 28——7 of 33 · Illinois last day of school 2027, by district
Longest closure
Winter break, December 21 to January 4 (11 school days)
One-day closures
6
Closures starting Tuesday to Thursday
2
Staff days, no students
none published
Early-release days
38: Aug 19, Aug 26, Sep 2, Sep 9, Sep 16, Sep 23 and 32 more
Most days off in one month
December, 9 school days
Months with no day off
August, April and May
Longest run of school days
45, March 29 to May 28

Every date

Every published date · Columbia Community Unit School District 4 · 2026–2027
DateWhat it isTime offDistrict’s own wording
August 13First day of school—First Day of School
August 19Early release—Early Release Wednesday - EV@1:45PM; PV@1:40PM; CMS@1:40PM; CHS@1:30PM
August 26Early release—Early Release Wednesday - EV@1:45PM; PV@1:40PM; CMS@1:40PM; CHS@1:30PM
September 2Early release—Early Release Wednesday - EV@1:45PM; PV@1:40PM; CMS@1:40PM; CHS@1:30PM
September 7Labor Day1 school dayNo School - Labor Day
September 9Early release—Early Release Wednesday - EV@1:45PM; PV@1:40PM; CMS@1:40PM; CHS@1:30PM
September 16Early release—Early Release Wednesday - EV@1:45PM; PV@1:40PM; CMS@1:40PM; CHS@1:30PM
September 23Early release—Early Release Wednesday - EV@1:45PM; PV@1:40PM; CMS@1:40PM; CHS@1:30PM
September 30Early release—Early Release Wednesday - EV@1:45PM; PV@1:40PM; CMS@1:40PM; CHS@1:30PM
October 5CHS Open House—CHS Open House
October 7Early release—Early Release Wednesday - EV@1:45PM; PV@1:40PM; CMS@1:40PM; CHS@1:30PM
October 9No school1 school dayNo School - Teacher Institute
October 12Columbus Day / Indigenous Peoples’ Day1 school dayNo School - Columbus Day
October 14Early release—Early Release Wednesday - EV@1:45PM; PV@1:40PM; CMS@1:40PM; CHS@1:30PM
October 21Early release—Early Release Wednesday - EV@1:45PM; PV@1:40PM; CMS@1:40PM; CHS@1:30PM
October 23No school1 school dayNo School
October 28Early release—Early Release Wednesday - EV@1:45PM; PV@1:40PM; CMS@1:40PM; CHS@1:30PM
November 4Early release—Early Release Wednesday - EV@1:45PM; PV@1:40PM; CMS@1:40PM; CHS@1:30PM
November 11Veterans Day1 school dayNo School - Veterans Day
November 18Early release—Early Release Wednesday - EV@1:45PM; PV@1:40PM; CMS@1:40PM; CHS@1:30PM
November 25–27Thanksgiving break3 school daysNo School - Thanksgiving Break
November 30Classes resume—School Resumes
December 2Early release—Early Release Wednesday - EV@1:45PM; PV@1:40PM; CMS@1:40PM; CHS@1:30PM
December 9Early release—Early Release Wednesday - EV@1:45PM; PV@1:40PM; CMS@1:40PM; CHS@1:30PM
December 16Early release—Early Release Wednesday - EV@1:45PM; PV@1:40PM; CMS@1:40PM; CHS@1:30PM
December 21 to January 4Winter break11 school daysNo School - Winter Break; Jan 4: No School - Teacher Institute
January 5Classes resume—School Resumes
January 6Early release—Early Release Wednesday - EV@1:45PM; PV@1:40PM; CMS@1:40PM; CHS@1:30PM
January 13Early release—Early Release Wednesday - EV@1:45PM; PV@1:40PM; CMS@1:40PM; CHS@1:30PM
January 18Martin Luther King Jr. Day1 school dayNo School - Martin Luther King Observance
January 20Early release—Early Release Wednesday - EV@1:45PM; PV@1:40PM; CMS@1:40PM; CHS@1:30PM
January 27Early release—Early Release Wednesday - EV@1:45PM; PV@1:40PM; CMS@1:40PM; CHS@1:30PM
February 3Early release—Early Release Wednesday - EV@1:45PM; PV@1:40PM; CMS@1:40PM; CHS@1:30PM
February 10Early release—Early Release Wednesday - EV@1:45PM; PV@1:40PM; CMS@1:40PM; CHS@1:30PM
February 15Presidents Day1 school dayNo School - Presidents Day
February 17Early release—Early Release Wednesday - EV@1:45PM; PV@1:40PM; CMS@1:40PM; CHS@1:30PM
February 24Early release—Early Release Wednesday - EV@1:45PM; PV@1:40PM; CMS@1:40PM; CHS@1:30PM
March 1No school1 school dayNo School - Casmir Pulaski Day
March 3Early release—Early Release Wednesday - EV@1:45PM; PV@1:40PM; CMS@1:40PM; CHS@1:30PM
March 10Early release—Early Release Wednesday - EV@1:45PM; PV@1:40PM; CMS@1:40PM; CHS@1:30PM
March 17Early release—Early Release Wednesday - EV@1:45PM; PV@1:40PM; CMS@1:40PM; CHS@1:30PM
March 22–26Spring break5 school daysNo School - Spring Break
March 29Classes resume—School Resumes
March 31Early release—Early Release Wednesday - EV@1:45PM; PV@1:40PM; CMS@1:40PM; CHS@1:30PM
April 7Early release—Early Release Wednesday - EV@1:45PM; PV@1:40PM; CMS@1:40PM; CHS@1:30PM
April 14Early release—Early Release Wednesday - EV@1:45PM; PV@1:40PM; CMS@1:40PM; CHS@1:30PM
April 21Early release—Early Release Wednesday - EV@1:45PM; PV@1:40PM; CMS@1:40PM; CHS@1:30PM
April 28Early release—Early Release Wednesday - EV@1:45PM; PV@1:40PM; CMS@1:40PM; CHS@1:30PM
April 30Early release—Half Day Dismissal for Students; Teacher Institute in the afternoon
May 5Early release—Early Release Wednesday - EV@1:45PM; PV@1:40PM; CMS@1:40PM; CHS@1:30PM
May 12Early release—Early Release Wednesday - EV@1:45PM; PV@1:40PM; CMS@1:40PM; CHS@1:30PM
May 19Early release—Early Release Wednesday - EV@1:45PM; PV@1:40PM; CMS@1:40PM; CHS@1:30PM
May 21Early release—Half Day Dismissal for Students; Teacher Institute in the afternoon
May 26Early release—Early Release Wednesday - EV@1:45PM; PV@1:40PM; CMS@1:40PM; CHS@1:30PM
May 28Last day of school—Last Day of School - Half Day Dismissal (May be sooner if no emergency days are used)

Sources

  1. District’s calendar: https://www.columbia4.org/events (the source)
  2. District website: https://www.columbia4.org
  3. Calendar feed read on October 8, 2026: https://thrillshare-cmsv2.services.thrillshare.com/api/v4/o/33445/cms/events

How these dates are read and labeled: Methodology.

Other Illinois districts

Bethalto Community Unit School District 8: 27 school days off Charleston Community Unit School District 1: 27 school days off Effingham Community Unit School District 40: 27 school days off River Ridge Community Unit School District 210: 27 school days off