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Mahomet-Seymour CUSD #3 IL Calendar 26-27

  • 2026/27
  • Illinois
  • 3 teacher days

The Mahomet-Seymour CUSD #3 2026–27 school year starts on Aug 12, 2026. Breaks include Thanksgiving break Nov 25-27 and spring break Mar 15-19. The table below lists all teacher workdays, early release days, and holidays. Download the PDF calendar, or read the FAQs.

School year starts Wed, Aug 12, 2026 First Day of School
School year ends See full dates Last day not published separately
Next key date Wed, Aug 12, 2026 Counts down once the school year is under way

Mahomet-Seymour CUSD #3 2026-27 calendar

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Mahomet-Seymour CUSD #3 school year calendar

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

  • First day of school
  • Holiday - school closed
  • Break / vacation
  • Teacher / professional day
  • Early release / half day
  • Parent-teacher conference
  • Weather make-up day
  • Other scheduled date

August 2026

  • Aug 10-11, 2026 — Teachers Institute Day - No Student Attendance
  • Aug 12, 2026 — First Day of School

September 2026

  • Sep 7, 2026 — Labor Day - No School
  • Sep 16, 2026 — 2-Hour Early Dismissal

October 2026

  • Oct 14, 2026 — 2-Hour Early Dismissal
  • Oct 15, 2026 — Regular Attendance Day, Conferences 3:30-8:40PM
  • Oct 16, 2026 — No School

November 2026

  • Nov 2, 2026 — No School
  • Nov 3, 2026 — Election Day - No School
  • Nov 11, 2026 — 2-Hour Early Dismissal
  • Nov 24, 2026 — 1-Hour Early Dismissal
  • Nov 25-27, 2026 — Thanksgiving Break - No School

December 2026

  • Dec 9, 2026 — 2-Hour Early Dismissal
  • Dec 18, 2026 — 1-Hour Early Dismissal
  • Dec 21-31, 2026 — Winter Vacation - No School

January 2027

  • Jan 1, 2027 — Winter Vacation - No School
  • Jan 4, 2027 — Teacher Institute Day - No Student Attendance
  • Jan 5, 2027 — Classes Resume
  • Jan 13, 2027 — 2-Hour Early Dismissal
  • Jan 18, 2027 — M.L.K. Birthday Observance - No School

February 2027

  • Feb 10, 2027 — 2-Hour Early Dismissal
  • Feb 12, 2027 — Teacher Institute Day - No Student Attendance
  • Feb 15, 2027 — President's Day - No School

March 2027

  • Mar 10, 2027 — 2-Hour Early Dismissal
  • Mar 11, 2027 — Regular Attendance Day, Conferences 3:30-8:40PM
  • Mar 12, 2027 — No School
  • Mar 15-19, 2027 — Spring Break - No School
  • Mar 26, 2027 — No School

April 2027

  • Apr 14, 2027 — 2-Hour Early Dismissal
  • Apr 26, 2027 — No School

May 2027

  • May 21, 2027 — Last Official Day for Students - 2-Hour Dismissal
  • May 24-28, 2027 — Emergency Days (If Needed)
  • May 31, 2027 — Memorial Day - No School

June 2027

July 2027

Mahomet-Seymour CUSD #3 teacher and staff days 2026/27

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

  • Aug 10-11, 2026 Teachers Institute Day - No Student Attendance District source
  • Jan 4, 2027 Teacher Institute Day - No Student Attendance District source
  • Feb 12, 2027 Teacher Institute Day - No Student Attendance District source

Mahomet-Seymour CUSD #3 breaks and holidays

School is closed to students on these dates.

  • Sep 7, 2026 Labor Day - No School Holiday
  • Oct 16, 2026 No School Holiday
  • Nov 2, 2026 No School Holiday
  • Nov 3, 2026 Election Day - No School Holiday
  • Nov 25-27, 2026 Thanksgiving Break - No School Break
  • Dec 21-31, 2026 Winter Vacation - No School Break
  • Jan 1, 2027 Winter Vacation - No School Break
  • Jan 18, 2027 M.L.K. Birthday Observance - No School Holiday
  • Feb 15, 2027 President's Day - No School Holiday
  • Mar 12, 2027 No School Holiday
  • Mar 15-19, 2027 Spring Break - No School Break
  • Mar 26, 2027 No School Holiday
  • Apr 26, 2027 No School Holiday
  • May 31, 2027 Memorial Day - No School Holiday

Your checked 2026/27 Mahomet-Seymour CUSD #3 planning calendar

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

Useful now33 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 April 30, 2026.
Full term dates table

Mahomet-Seymour CUSD #3 2026–27 calendar dates

DateEvent
Aug 10-11, 2026Teachers Institute Day - No Student Attendance
Aug 12, 2026First Day of School
Sep 7, 2026Labor Day - No School
Sep 16, 20262-Hour Early Dismissal
Oct 14, 20262-Hour Early Dismissal
Oct 15, 2026Regular Attendance Day, Conferences 3:30-8:40PM
Oct 16, 2026No School
Nov 2, 2026No School
Nov 3, 2026Election Day - No School
Nov 11, 20262-Hour Early Dismissal
Nov 24, 20261-Hour Early Dismissal
Nov 25-27, 2026Thanksgiving Break - No School
Dec 9, 20262-Hour Early Dismissal
Dec 18, 20261-Hour Early Dismissal
Dec 21-31, 2026Winter Vacation - No School
Jan 1, 2027Winter Vacation - No School
Jan 4, 2027Teacher Institute Day - No Student Attendance
Jan 5, 2027Classes Resume
Jan 13, 20272-Hour Early Dismissal
Jan 18, 2027M.L.K. Birthday Observance - No School
Feb 10, 20272-Hour Early Dismissal
Feb 12, 2027Teacher Institute Day - No Student Attendance
Feb 15, 2027President's Day - No School
Mar 10, 20272-Hour Early Dismissal
Mar 11, 2027Regular Attendance Day, Conferences 3:30-8:40PM
Mar 12, 2027No School
Mar 15-19, 2027Spring Break - No School
Mar 26, 2027No School
Apr 14, 20272-Hour Early Dismissal
Apr 26, 2027No School
May 21, 2027Last Official Day for Students - 2-Hour Dismissal
May 24-28, 2027Emergency Days (If Needed)
May 31, 2027Memorial Day - No School

Mahomet-Seymour CUSD #3 Calendar 2026-2027 FAQ

When is the first day of school in Mahomet-Seymour CUSD #3 2026-2027?
The first day of school is August 12, 2026.
When is spring break in Mahomet-Seymour CUSD #3 2026-2027?
Spring break is from March 15 to March 19, 2027.
When is Christmas break in Mahomet-Seymour CUSD #3 2026-2027?
Christmas break begins on December 21, 2026 and continues through January 1, 2027.
When is winter break in Mahomet-Seymour CUSD #3 2026-2027?
Winter break runs from December 21, 2026 to January 1, 2027.
When is Thanksgiving break in Mahomet-Seymour CUSD #3 2026-2027?
Thanksgiving break is from November 25 to November 27, 2026.
When is the last day of school in Mahomet-Seymour CUSD #3 2026-2027?
The last official day for students is May 21, 2027, with a 2-hour early dismissal.
When does school resume after winter break in Mahomet-Seymour CUSD #3 2026-2027?
Classes resume on January 5, 2027.
Are there any teacher institute days in Mahomet-Seymour CUSD #3 2026-2027?
Yes, teacher institute days are on August 10-11, 2026, January 4, 2027, and February 12, 2027. Students do not attend on these days.
When is Memorial Day holiday in Mahomet-Seymour CUSD #3 2026-2027?
Memorial Day is observed on May 31, 2027, and there is no school.
Are there early dismissal days in Mahomet-Seymour CUSD #3 2026-2027?
Yes, several early dismissal days are scheduled throughout the year, including September 16, October 14, November 11, December 9, January 13, February 10, March 10, and April 14, 2027.

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Mahomet-Seymour CUSD #3 calendar FAQs

When is the first day of school in Mahomet-Seymour CUSD #3 2026-2027?
The first day of school is August 12, 2026.
When is spring break in Mahomet-Seymour CUSD #3 2026-2027?
Spring break is from March 15 to March 19, 2027.
When is Christmas break in Mahomet-Seymour CUSD #3 2026-2027?
Christmas break begins on December 21, 2026 and continues through January 1, 2027.
When is winter break in Mahomet-Seymour CUSD #3 2026-2027?
Winter break runs from December 21, 2026 to January 1, 2027.
When is Thanksgiving break in Mahomet-Seymour CUSD #3 2026-2027?
Thanksgiving break is from November 25 to November 27, 2026.
When is the last day of school in Mahomet-Seymour CUSD #3 2026-2027?
The last official day for students is May 21, 2027, with a 2-hour early dismissal.
When does school resume after winter break in Mahomet-Seymour CUSD #3 2026-2027?
Classes resume on January 5, 2027.
Are there any teacher institute days in Mahomet-Seymour CUSD #3 2026-2027?
Yes, teacher institute days are on August 10-11, 2026, January 4, 2027, and February 12, 2027. Students do not attend on these days.
When is Memorial Day holiday in Mahomet-Seymour CUSD #3 2026-2027?
Memorial Day is observed on May 31, 2027, and there is no school.
Are there early dismissal days in Mahomet-Seymour CUSD #3 2026-2027?
Yes, several early dismissal days are scheduled throughout the year, including September 16, October 14, November 11, December 9, January 13, February 10, March 10, and April 14, 2027.

Dates can change after publication. Read our calendar disclaimer.