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Chester Community Unit School District 139 IL Calendar 26-27

  • 2026/27
  • Illinois
  • 3 teacher days

The Chester Community Unit School District 139 2026–27 school year runs from Aug 13, 2026 to May 21, 2027. Breaks include Thanksgiving break Nov 25, winter break Dec 18, and spring break Mar 25. The table below lists all teacher workdays, early release days, and holidays. Download the PDF calendar, or read the FAQs.

School year starts Thu, Aug 13, 2026 First Day of Student Attendance (Early Dismissal)
School year ends Fri, May 21, 2027 Last Day of Student Attendance
Next key date Thu, Aug 13, 2026 Counts down once the school year is under way

Chester Community Unit School District 139 2026-27 calendar

Select a thumbnail to open it full size, zoom in, or download it.

Chester Community Unit School District 139 school year calendar

Every published date for 2026–27, colour-coded by what happens that day.

  • First day of school
  • Last day of school
  • Holiday - school closed
  • Break / vacation
  • Teacher / professional day
  • Early release / half day
  • Parent-teacher conference
  • Grading period / report cards

August 2026

  • Aug 11, 2026 — Teachers' Institute Day
  • Aug 12, 2026 — Teachers' Institute Day
  • Aug 13, 2026 — First Day of Student Attendance (Early Dismissal)
  • Aug 14, 2026 — School Improvement Day (Early Dismissal)
  • Aug 21, 2026 — School Improvement Day (Early Dismissal)

September 2026

  • Sep 4, 2026 — School Improvement Day (Early Dismissal)
  • Sep 7, 2026 — Labor Day - No School
  • Sep 11, 2026 — School Improvement Day (Early Dismissal)
  • Sep 18, 2026 — School Improvement Day (Early Dismissal)
  • Sep 25, 2026 — School Improvement Day (Early Dismissal)

October 2026

  • Oct 2, 2026 — School Improvement Day (Early Dismissal)
  • Oct 9, 2026 — Columbus Day - No School
  • Oct 16, 2026 — School Improvement Day (Early Dismissal)
  • Oct 16, 2026 — End of First Quarter
  • Oct 20, 2026 — Parent/Teacher Conferences (Early Dismissal)

November 2026

  • Nov 6, 2026 — School Improvement Day (Early Dismissal)
  • Nov 11, 2026 — Veterans Day - No School
  • Nov 13, 2026 — School Improvement Day (Early Dismissal)
  • Nov 20, 2026 — School Improvement Day (Early Dismissal)
  • Nov 25, 2026 — Thanksgiving Break (Early Dismissal)

December 2026

  • Dec 4, 2026 — School Improvement Day (Early Dismissal)
  • Dec 11, 2026 — School Improvement Day (Early Dismissal)
  • Dec 16-17, 2026 — Exams (Early Dismissal)
  • Dec 18, 2026 — Christmas Break Begins (Early Dismissal)
  • Dec 18, 2026 — End of Second Quarter

January 2027

  • Dec 21, 2026 - Jan 1, 2027 — Christmas Break - No School
  • Jan 4, 2027 — Teachers' Institute Day
  • Jan 8, 2027 — School Improvement Day (Early Dismissal)
  • Jan 15, 2027 — School Improvement Day (Early Dismissal)
  • Jan 18, 2027 — Martin Luther King Jr. Day - No School

February 2027

  • Feb 5, 2027 — School Improvement Day (Early Dismissal)
  • Feb 12, 2027 — 30 Minute Early Dismissal
  • Feb 15, 2027 — Presidents' Day - No School
  • Feb 19, 2027 — School Improvement Day (Early Dismissal)
  • Feb 26, 2027 — School Improvement Day (Early Dismissal)

March 2027

  • Mar 5, 2027 — School Improvement Day (Early Dismissal)
  • Mar 5, 2027 — End of Third Quarter
  • Mar 8, 2027 — Parent/Teacher Conferences (Early Dismissal)
  • Mar 11, 2027 — Parent/Teacher Conferences (Evening)
  • Mar 12, 2027 — Parent/Teacher Conferences - No School

April 2027

  • Mar 29-Apr 2, 2027 — Spring Break - No School
  • Apr 9, 2027 — School Improvement Day (Early Dismissal)
  • Apr 16, 2027 — 30 Minute Early Dismissal
  • Apr 23, 2027 — School Improvement Day (Early Dismissal)
  • Apr 30, 2027 — School Improvement Day (Early Dismissal)

May 2027

  • May 7, 2027 — School Improvement Day (Early Dismissal)
  • May 12, 2027 — School Improvement Day (Early Dismissal)
  • May 13, 2027 — 30 Minute Early Dismissal
  • May 14, 2027 — School Improvement Day (Early Dismissal)
  • May 14, 2027 — End of Fourth Quarter

June 2027

July 2027

Chester Community Unit School District 139 teacher and staff days 2026/27

Students normally stay home on these days. Confirm with the district before making plans.

  • Aug 11, 2026 Teachers' Institute Day District source
  • Aug 12, 2026 Teachers' Institute Day District source
  • Jan 4, 2027 Teachers' Institute Day District source

Chester Community Unit School District 139 breaks and holidays

School is closed to students on these dates.

  • Sep 7, 2026 Labor Day - No School Holiday
  • Oct 9, 2026 Columbus Day - No School Holiday
  • Nov 11, 2026 Veterans Day - No School Holiday
  • Nov 26-27, 2026 Thanksgiving Break - No School Break
  • Dec 21, 2026 - Jan 1, 2027 Christmas Break - No School Break
  • Jan 18, 2027 Martin Luther King Jr. Day - No School Holiday
  • Feb 15, 2027 Presidents' Day - No School Holiday
  • Mar 26, 2027 Spring Break - No School Break
  • Mar 29-Apr 2, 2027 Spring Break - No School Break
  • May 21, 2027 Memorial Day Observance - No School Holiday

Your checked 2026/27 Chester Community Unit School District 139 planning calendar

How these dates are put together, and what to double-check before you book anything.

Useful now62 published dates for the 2026–27 school year, laid out month by month.
CheckedTaken from the district’s own published calendar, not retyped from memory.
Kept currentLast updated July 12, 2026.
Full term dates table

Chester Community Unit School District 139 2026–27 calendar dates

DateEvent
Aug 11, 2026Teachers' Institute Day
Aug 12, 2026Teachers' Institute Day
Aug 13, 2026First Day of Student Attendance (Early Dismissal)
Aug 14, 2026School Improvement Day (Early Dismissal)
Aug 21, 2026School Improvement Day (Early Dismissal)
Aug 28, 2026School Improvement Day (Early Dismissal)
Sep 4, 2026School Improvement Day (Early Dismissal)
Sep 7, 2026Labor Day - No School
Sep 11, 2026School Improvement Day (Early Dismissal)
Sep 18, 2026School Improvement Day (Early Dismissal)
Sep 25, 2026School Improvement Day (Early Dismissal)
Oct 2, 2026School Improvement Day (Early Dismissal)
Oct 9, 2026Columbus Day - No School
Oct 16, 2026School Improvement Day (Early Dismissal)
Oct 16, 2026End of First Quarter
Oct 20, 2026Parent/Teacher Conferences (Early Dismissal)
Oct 22, 2026Parent/Teacher Conferences - No School
Oct 23, 2026Parent/Teacher Conferences (Early Dismissal)
Oct 30, 2026School Improvement Day (Early Dismissal)
Nov 6, 2026School Improvement Day (Early Dismissal)
Nov 11, 2026Veterans Day - No School
Nov 13, 2026School Improvement Day (Early Dismissal)
Nov 20, 2026School Improvement Day (Early Dismissal)
Nov 25, 2026Thanksgiving Break (Early Dismissal)
Nov 26-27, 2026Thanksgiving Break - No School
Dec 4, 2026School Improvement Day (Early Dismissal)
Dec 11, 2026School Improvement Day (Early Dismissal)
Dec 16-17, 2026Exams (Early Dismissal)
Dec 18, 2026Christmas Break Begins (Early Dismissal)
Dec 18, 2026End of Second Quarter
Dec 21, 2026 - Jan 1, 2027Christmas Break - No School
Jan 4, 2027Teachers' Institute Day
Jan 8, 2027School Improvement Day (Early Dismissal)
Jan 15, 2027School Improvement Day (Early Dismissal)
Jan 18, 2027Martin Luther King Jr. Day - No School
Jan 22, 2027School Improvement Day (Early Dismissal)
Jan 29, 2027School Improvement Day (Early Dismissal)
Feb 5, 2027School Improvement Day (Early Dismissal)
Feb 12, 202730 Minute Early Dismissal
Feb 15, 2027Presidents' Day - No School
Feb 19, 2027School Improvement Day (Early Dismissal)
Feb 26, 2027School Improvement Day (Early Dismissal)
Mar 5, 2027School Improvement Day (Early Dismissal)
Mar 5, 2027End of Third Quarter
Mar 8, 2027Parent/Teacher Conferences (Early Dismissal)
Mar 11, 2027Parent/Teacher Conferences (Evening)
Mar 12, 2027Parent/Teacher Conferences - No School
Mar 19, 2027School Improvement Day (Early Dismissal)
Mar 25, 2027Spring Break (Early Dismissal)
Mar 26, 2027Spring Break - No School
Mar 29-Apr 2, 2027Spring Break - No School
Apr 9, 2027School Improvement Day (Early Dismissal)
Apr 16, 202730 Minute Early Dismissal
Apr 23, 2027School Improvement Day (Early Dismissal)
Apr 30, 2027School Improvement Day (Early Dismissal)
May 7, 2027School Improvement Day (Early Dismissal)
May 12, 2027School Improvement Day (Early Dismissal)
May 13, 202730 Minute Early Dismissal
May 14, 2027School Improvement Day (Early Dismissal)
May 14, 2027End of Fourth Quarter
May 21, 2027Memorial Day Observance - No School
May 21, 2027Last Day of Student Attendance

Chester Community Unit School District 139 Calendar 26-27 Revised FAQs

When is the first day of school in Chester Community Unit School District 139 for 2026-2027?
The first day of student attendance for Chester Community Unit School District 139 is August 13, 2026. Students will have an early dismissal on this day.
When is Spring Break in Chester Community Unit School District 139 for 2026-2027?
Spring Break begins with an early dismissal on March 25, 2027. There is no school from March 26 through April 2, 2027. Students return to school on April 5, 2027.
When is Christmas Break in Chester Community Unit School District 139 for 2026-2027?
Christmas Break begins with an early dismissal on December 18, 2026. There is no school from December 21, 2026 through January 1, 2027. Teachers return for Institute Day on January 4, 2027.
When is Winter Break in Chester Community Unit School District 139 for 2026-2027?
Winter Break coincides with the Christmas holiday. Students are off from December 21, 2026 through January 1, 2027, following an early dismissal on December 18, 2026.
When is Thanksgiving Break in Chester Community Unit School District 139 for 2026-2027?
Thanksgiving Break begins with an early dismissal on November 25, 2026. There is no school on November 26-27, 2026.
When is the last day of school in Chester Community Unit School District 139 for 2026-2027?
The last day of student attendance is May 21, 2027. This day also marks the end of the fourth quarter and includes the Memorial Day observance.
When are the Teachers' Institute Days for Chester Community Unit School District 139 in 2026-2027?
Teachers' Institute Days are scheduled for August 11-12, 2026 and January 4, 2027. Students do not attend school on these dates.
When is Labor Day observed in Chester Community Unit School District 139 during the 2026-2027 school year?
Labor Day is observed on September 7, 2026. There is no school on this day.
When is Columbus Day in Chester Community Unit School District 139 for 2026-2027?
Columbus Day is observed on October 9, 2026. Students do not attend school.
When is Veterans Day in Chester Community Unit School District 139 for 2026-2027?
Veterans Day is observed on November 11, 2026, and there is no school.
When is Martin Luther King Jr. Day in Chester Community Unit School District 139 for 2026-2027?
Martin Luther King Jr. Day is observed on January 18, 2027. School is closed for students.
When is Presidents' Day in Chester Community Unit School District 139 for 2026-2027?
Presidents' Day is observed on February 15, 2027. There is no school on this holiday.
When does the first quarter end in Chester Community Unit School District 139 for 2026-2027?
The first quarter ends on October 16, 2026.
When does the second quarter end in Chester Community Unit School District 139 for 2026-2027?
The second quarter ends on December 18, 2026, the same day Christmas Break begins with an early dismissal.
When does the third quarter end in Chester Community Unit School District 139 for 2026-2027?
The third quarter ends on March 5, 2027.
When does the fourth quarter end in Chester Community Unit School District 139 for 2026-2027?
The fourth quarter ends on May 21, 2027, which is also the last day of student attendance.
When are Parent-Teacher Conferences in Chester Community Unit School District 139 for 2026-2027?
Parent-Teacher Conferences are scheduled on October 20, 22, and 23, 2026, and again on March 8, 11, and 12, 2027. Some of these dates include early dismissal or no school for students.
Are there regular early dismissal days during the Chester Community Unit School District 139 2026-2027 school year?
Yes. The calendar includes numerous Friday early dismissal days for School Improvement, along with additional early dismissals for conferences, exams, holidays, and the final day before Spring Break.

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Chester Community Unit School District 139 calendar FAQs

When is the first day of school in Chester Community Unit School District 139 for 2026-2027?
The first day of student attendance for Chester Community Unit School District 139 is August 13, 2026. Students will have an early dismissal on this day.
When is Spring Break in Chester Community Unit School District 139 for 2026-2027?
Spring Break begins with an early dismissal on March 25, 2027. There is no school from March 26 through April 2, 2027. Students return to school on April 5, 2027.
When is Christmas Break in Chester Community Unit School District 139 for 2026-2027?
Christmas Break begins with an early dismissal on December 18, 2026. There is no school from December 21, 2026 through January 1, 2027. Teachers return for Institute Day on January 4, 2027.
When is Winter Break in Chester Community Unit School District 139 for 2026-2027?
Winter Break coincides with the Christmas holiday. Students are off from December 21, 2026 through January 1, 2027, following an early dismissal on December 18, 2026.
When is Thanksgiving Break in Chester Community Unit School District 139 for 2026-2027?
Thanksgiving Break begins with an early dismissal on November 25, 2026. There is no school on November 26-27, 2026.
When is the last day of school in Chester Community Unit School District 139 for 2026-2027?
The last day of student attendance is May 21, 2027. This day also marks the end of the fourth quarter and includes the Memorial Day observance.
When are the Teachers' Institute Days for Chester Community Unit School District 139 in 2026-2027?
Teachers' Institute Days are scheduled for August 11-12, 2026 and January 4, 2027. Students do not attend school on these dates.
When is Labor Day observed in Chester Community Unit School District 139 during the 2026-2027 school year?
Labor Day is observed on September 7, 2026. There is no school on this day.
When is Columbus Day in Chester Community Unit School District 139 for 2026-2027?
Columbus Day is observed on October 9, 2026. Students do not attend school.
When is Veterans Day in Chester Community Unit School District 139 for 2026-2027?
Veterans Day is observed on November 11, 2026, and there is no school.
When is Martin Luther King Jr. Day in Chester Community Unit School District 139 for 2026-2027?
Martin Luther King Jr. Day is observed on January 18, 2027. School is closed for students.
When is Presidents' Day in Chester Community Unit School District 139 for 2026-2027?
Presidents' Day is observed on February 15, 2027. There is no school on this holiday.
When does the first quarter end in Chester Community Unit School District 139 for 2026-2027?
The first quarter ends on October 16, 2026.
When does the second quarter end in Chester Community Unit School District 139 for 2026-2027?
The second quarter ends on December 18, 2026, the same day Christmas Break begins with an early dismissal.
When does the third quarter end in Chester Community Unit School District 139 for 2026-2027?
The third quarter ends on March 5, 2027.
When does the fourth quarter end in Chester Community Unit School District 139 for 2026-2027?
The fourth quarter ends on May 21, 2027, which is also the last day of student attendance.
When are Parent-Teacher Conferences in Chester Community Unit School District 139 for 2026-2027?
Parent-Teacher Conferences are scheduled on October 20, 22, and 23, 2026, and again on March 8, 11, and 12, 2027. Some of these dates include early dismissal or no school for students.
Are there regular early dismissal days during the Chester Community Unit School District 139 2026-2027 school year?
Yes. The calendar includes numerous Friday early dismissal days for School Improvement, along with additional early dismissals for conferences, exams, holidays, and the final day before Spring Break.

Dates can change after publication. Read our calendar disclaimer.