SchoolDates
Read from the district on October 8, 2026

Tri-Valley Community Unit School District 3 school calendar, 2026–2027

Key dates for 2026–2027: first day of school August 20; Thanksgiving break November 25–27; winter break December 21 to January 4; spring break March 22–29; last day of school May 26.

Next time off Oct 12 No school · October 12 As of October 8, 2026, the day this calendar was read
School days off this year 30 across 12 separate closures
Last day of school May 26 Wednesday
First day of school August 20; Thanksgiving break November 25–27; Winter break December 21 to January 4; Spring break March 22–29; 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
  • 18–19No school
  • 20First 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
  • 16No school

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
  • 12No school
  • 22Early release
  • 23Conferences, no school

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
  • 2No school
  • 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
  • 18Early 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
  • 18MLK 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
  • 12No school
  • 15Presidents Day

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
  • 8No school
  • 19Early release
  • 22–29Spring 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
  • 23No school

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
  • 26Semester ends
  • 27No school
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 Illinois
First day of schoolAugust 20——3 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 22–296Tuesday, March 306 of 40 · Illinois spring break 2027, by district
Last day of schoolMay 26——3 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
8
Closures starting Tuesday to Thursday
2
Staff days, no students
none published
Early-release days
3: Oct 22, Dec 18, Mar 19
Most days off in one month
December, 9 school days
Months with no day off
August and May
Longest run of school days
23, April 26 to May 26

Every date

Every published date · Tri-Valley Community Unit School District 3 · 2026–2027
DateWhat it isTime offDistrict’s own wording
August 18–19No school—Teacher Institute - No School
August 20First day of school—First Day of School - Early Dismissal
September 7Labor Day1 school dayNo School
September 16No school1 school daySchool Improvement Day - No School
October 12No school1 school dayNo School
October 22Early release—Parent/Teacher Conference -Early Dismissal (1/2 day)
October 23Parent-teacher conferences, no school1 school dayParent/Teacher Conference - No School
November 2No school1 school daySchool Improvement Day - No School
November 25–27Thanksgiving break3 school daysNo School
December 18Early release—Early Dismissal - 1:40P
December 18End of semester—End of 2nd Quarter/1st Semester
December 21 to January 4Winter break11 school daysNo School; Jan 4: School Improvement Day - No School
January 18Martin Luther King Jr. Day1 school dayNo School
February 12No school1 school dayTeacher Institute - No School
February 15Presidents Day1 school dayNo School
March 8No school1 school daySchool Improvement Day - No School
March 19Early release—Early Dismissal - 1:40P
March 22–29Spring break6 school daysNo School
April 23No school1 school daySchool Improvement Day - No School
May 26End of semester—End of 4th Quarter/2nd Semester
May 26Last day of school—Last Day of School - Early Dismissal
May 27No school—Teacher Institute - No School

Sources

  1. District’s calendar: https://www.tri-valley3.org/events (the source)
  2. District website: https://www.tri-valley3.org
  3. Calendar feed read on October 8, 2026: https://thrillshare-cmsv2.services.thrillshare.com/api/v4/o/1431/cms/events

How these dates are read and labeled: Methodology.

Other Illinois districts

Center Cass School District 66: 30 school days off Beach Park Community Consolidated School District 3: 29 school days off Brookwood School District 167: 31 school days off Community Consolidated School District 89: 31 school days off