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Mercer County School District 404 IL Calendar 26-27

  • 2026/27
  • Illinois
  • 4 teacher days

The Mercer County School District 404 2026–27 school year runs from Aug 12, 2026 to May 28, 2027. Breaks include Thanksgiving break Nov 26-27, winter break Dec 21-31, and spring break Mar 26-31. The table below lists all teacher workdays and holidays. Download the PDF calendar, or read the FAQs.

School year starts Wed, Aug 12, 2026 First Day of School
School year ends Fri, May 28, 2027 Last Day of School
Next key date Wed, Aug 12, 2026 Counts down once the school year is under way

Mercer County School District 404 2026-27 calendar

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Mercer County School District 404 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
  • Parent-teacher conference
  • Weather make-up day

August 2026

  • Aug 11, 2026 — Teacher Institute/Workshop
  • Aug 12, 2026 — First Day of School

September 2026

  • Sep 7, 2026 — Labor Day (Holiday)

October 2026

  • Oct 9, 2026 — Teacher Institute/Workshop
  • Oct 12, 2026 — Columbus Day (Holiday)
  • Oct 22, 2026 — Full-Day Parent/Teacher Conference

November 2026

  • Nov 26-27, 2026 — Thanksgiving Break

December 2026

  • Dec 21-31, 2026 — Winter Break
  • Dec 25, 2026 — Christmas Day (Holiday)

January 2027

  • Jan 1, 2027 — New Year's Day (Holiday)
  • Jan 4, 2027 — Teacher Institute/Workshop
  • Jan 18, 2027 — Martin Luther King Jr. Day (Holiday)

February 2027

  • Feb 15, 2027 — Presidents' Day (Holiday)

March 2027

  • Mar 26-31, 2027 — Spring Break

April 2027

  • Apr 1-2, 2027 — Spring Break

May 2027

  • May 21, 2027 — Teacher Institute/Workshop
  • May 24-28, 2027 — Proposed Emergency Days
  • May 28, 2027 — Last Day of School
  • May 31, 2027 — Memorial Day (Holiday)

June 2027

July 2027

Mercer County School District 404 teacher and staff days 2026/27

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

  • Aug 11, 2026 Teacher Institute/Workshop District source
  • Oct 9, 2026 Teacher Institute/Workshop District source
  • Jan 4, 2027 Teacher Institute/Workshop District source
  • May 21, 2027 Teacher Institute/Workshop District source

Mercer County School District 404 breaks and holidays

School is closed to students on these dates.

  • Sep 7, 2026 Labor Day (Holiday) Holiday
  • Oct 12, 2026 Columbus Day (Holiday) Holiday
  • Nov 26-27, 2026 Thanksgiving Break Break
  • Dec 21-31, 2026 Winter Break Break
  • Dec 25, 2026 Christmas Day (Holiday) Holiday
  • Jan 1, 2027 New Year's Day (Holiday) Holiday
  • Jan 18, 2027 Martin Luther King Jr. Day (Holiday) Holiday
  • Feb 15, 2027 Presidents' Day (Holiday) Holiday
  • Mar 26-31, 2027 Spring Break Break
  • Apr 1-2, 2027 Spring Break Break
  • May 31, 2027 Memorial Day (Holiday) Holiday

Your checked 2026/27 Mercer County School District 404 planning calendar

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

Useful now19 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

Mercer County School District 404 2026–27 calendar dates

DateEvent
Aug 11, 2026Teacher Institute/Workshop
Aug 12, 2026First Day of School
Sep 7, 2026Labor Day (Holiday)
Oct 9, 2026Teacher Institute/Workshop
Oct 12, 2026Columbus Day (Holiday)
Oct 22, 2026Full-Day Parent/Teacher Conference
Nov 26-27, 2026Thanksgiving Break
Dec 21-31, 2026Winter Break
Dec 25, 2026Christmas Day (Holiday)
Jan 1, 2027New Year's Day (Holiday)
Jan 4, 2027Teacher Institute/Workshop
Jan 18, 2027Martin Luther King Jr. Day (Holiday)
Feb 15, 2027Presidents' Day (Holiday)
Mar 26-31, 2027Spring Break
Apr 1-2, 2027Spring Break
May 21, 2027Teacher Institute/Workshop
May 24-28, 2027Proposed Emergency Days
May 28, 2027Last Day of School
May 31, 2027Memorial Day (Holiday)

Mercer County School District 404 Calendar 26-27 Revised FAQs

When is the first day of school in Mercer County School District 404 for 2026-2027?
The first day of school for students in Mercer County School District 404 is August 12, 2026. August 11, 2026, is scheduled as a Teacher Institute/Workshop day.
When is Spring Break in Mercer County School District 404 for 2026-2027?
Spring Break is scheduled from March 26 through April 2, 2027. Students return to school on April 5, 2027.
When is Christmas Break in Mercer County School District 404 for 2026-2027?
Christmas Break begins on December 21, 2026, and continues through January 1, 2027. Classes resume after the Teacher Institute on January 4, with students returning on January 5, 2027.
When is Winter Break in Mercer County School District 404 for 2026-2027?
Winter Break is scheduled from December 21, 2026, through January 1, 2027.
When is Thanksgiving Break in Mercer County School District 404 for 2026-2027?
Thanksgiving Break is scheduled for November 26-27, 2026.
When is the last day of school in Mercer County School District 404 for 2026-2027?
The last scheduled day of school is May 28, 2027, provided no additional emergency days are required.
When is Labor Day observed in Mercer County School District 404 during the 2026-2027 school year?
Labor Day is observed on September 7, 2026, and schools are closed.
When are Parent-Teacher Conferences scheduled in Mercer County School District 404 for 2026-2027?
A Full-Day Parent/Teacher Conference is scheduled for October 22, 2026.
When are Teacher Institute days in Mercer County School District 404 for 2026-2027?
Teacher Institute/Workshop days are scheduled for August 11, 2026, October 9, 2026, January 4, 2027, and May 21, 2027.
Are emergency days included in the Mercer County School District 404 Calendar 2026-2027?
Yes. Proposed emergency days are scheduled for May 24-28, 2027. If these days are not needed, the school year will end as originally scheduled.
Is school closed for Martin Luther King Jr. Day in Mercer County School District 404?
Yes. Schools are closed on January 18, 2027, in observance of Martin Luther King Jr. Day.
Is Presidents' Day a holiday in Mercer County School District 404 for 2026-2027?
Yes. Schools are closed on February 15, 2027, for Presidents' Day.

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Mercer County School District 404 calendar FAQs

When is the first day of school in Mercer County School District 404 for 2026-2027?
The first day of school for students in Mercer County School District 404 is August 12, 2026. August 11, 2026, is scheduled as a Teacher Institute/Workshop day.
When is Spring Break in Mercer County School District 404 for 2026-2027?
Spring Break is scheduled from March 26 through April 2, 2027. Students return to school on April 5, 2027.
When is Christmas Break in Mercer County School District 404 for 2026-2027?
Christmas Break begins on December 21, 2026, and continues through January 1, 2027. Classes resume after the Teacher Institute on January 4, with students returning on January 5, 2027.
When is Winter Break in Mercer County School District 404 for 2026-2027?
Winter Break is scheduled from December 21, 2026, through January 1, 2027.
When is Thanksgiving Break in Mercer County School District 404 for 2026-2027?
Thanksgiving Break is scheduled for November 26-27, 2026.
When is the last day of school in Mercer County School District 404 for 2026-2027?
The last scheduled day of school is May 28, 2027, provided no additional emergency days are required.
When is Labor Day observed in Mercer County School District 404 during the 2026-2027 school year?
Labor Day is observed on September 7, 2026, and schools are closed.
When are Parent-Teacher Conferences scheduled in Mercer County School District 404 for 2026-2027?
A Full-Day Parent/Teacher Conference is scheduled for October 22, 2026.
When are Teacher Institute days in Mercer County School District 404 for 2026-2027?
Teacher Institute/Workshop days are scheduled for August 11, 2026, October 9, 2026, January 4, 2027, and May 21, 2027.
Are emergency days included in the Mercer County School District 404 Calendar 2026-2027?
Yes. Proposed emergency days are scheduled for May 24-28, 2027. If these days are not needed, the school year will end as originally scheduled.
Is school closed for Martin Luther King Jr. Day in Mercer County School District 404?
Yes. Schools are closed on January 18, 2027, in observance of Martin Luther King Jr. Day.
Is Presidents' Day a holiday in Mercer County School District 404 for 2026-2027?
Yes. Schools are closed on February 15, 2027, for Presidents' Day.

Dates can change after publication. Read our calendar disclaimer.