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Sullivan CUSD #300 IL Calendar 26-27

  • 2026/27
  • Illinois

The Sullivan CUSD #300 2026–27 school year runs from Aug 13, 2026 to May 27, 2027. Breaks include Thanksgiving break Nov 25-27, winter break Dec 21-Jan 1, and spring break Mar 15-19. The table below lists all teacher workdays, early release days, and holidays. Download or print the calendar, or read the FAQs.

School year starts Thu, Aug 13, 2026 First Day of School
School year ends Thu, May 27, 2027 Early Dismissal - Last Day of Student Attendance
Next key date Thu, Aug 13, 2026 Counts down once the school year is under way

Sullivan CUSD #300 2026-27 calendar

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Sullivan CUSD #300 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
  • Early release / half day
  • Parent-teacher conference
  • Graduation
  • Weather make-up day
  • Other scheduled date

August 2026

  • Aug 11, 2026 — Teachers Institute - No Student Attendance
  • Aug 12, 2026 — Teachers Institute - No Student Attendance
  • Aug 13, 2026 — First Day of School

September 2026

  • Sep 7, 2026 — Labor Day - No School

October 2026

  • Oct 2, 2026 — Early Dismissal - Homecoming
  • Oct 9, 2026 — Teachers Institute - No Student Attendance
  • Oct 12, 2026 — Columbus Day - No School
  • Oct 27, 2026 — Early Dismissal - P/T Conferences 3:30-6:30 p.m.
  • Oct 29, 2026 — Early Dismissal - P/T Conferences 3:30-6:30 p.m.

November 2026

  • Nov 24, 2026 — Early Dismissal
  • Nov 25-27, 2026 — Thanksgiving Break - No School

December 2026

  • Dec 17, 2026 — Early Dismissal
  • Dec 18, 2026 — School Improvement Day - No Student Attendance
  • Dec 21, 2026-Jan 1, 2027 — Christmas Break

January 2027

  • Dec 21, 2026-Jan 1, 2027 — Christmas Break
  • Jan 4, 2027 — P/T Conferences - No Student Attendance
  • Jan 5, 2027 — Students Return
  • Jan 18, 2027 — Martin Luther King Jr. Day - No School

February 2027

  • Feb 12, 2027 — School Improvement Day - No Student Attendance
  • Feb 15, 2027 — Lincoln's Birthday - No School
  • Feb 26, 2027 — Early Dismissal - Show Choir Invitational

March 2027

  • Mar 12, 2027 — School Improvement Day - No Student Attendance
  • Mar 15-19, 2027 — Spring Break
  • Mar 26, 2027 — No School
  • Mar 29, 2027 — No School

April 2027

  • Apr 23, 2027 — Emergency Day
  • Apr 30, 2027 — Emergency Day

May 2027

  • May 7, 2027 — Emergency Day
  • May 14, 2027 — Emergency Day
  • May 21, 2027 — Emergency Day
  • May 23, 2027 — Graduation
  • May 27, 2027 — Early Dismissal - Last Day of Student Attendance

June 2027

July 2027

Sullivan CUSD #300 breaks and holidays

School is closed to students on these dates.

  • Sep 7, 2026 Labor Day - No School Holiday
  • Oct 12, 2026 Columbus Day - No School Holiday
  • Nov 25-27, 2026 Thanksgiving Break - No School Break
  • Dec 21, 2026-Jan 1, 2027 Christmas Break Break
  • Jan 18, 2027 Martin Luther King Jr. Day - No School Holiday
  • Feb 15, 2027 Lincoln's Birthday - No School Holiday
  • Mar 15-19, 2027 Spring Break Break
  • Mar 26, 2027 No School Holiday
  • Mar 29, 2027 No School Holiday

Your checked 2026/27 Sullivan CUSD #300 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 August 11, 2026.
Full term dates table

Sullivan CUSD #300 2026–27 calendar dates

DateEvent
Aug 11, 2026Teachers Institute - No Student Attendance
Aug 12, 2026Teachers Institute - No Student Attendance
Aug 13, 2026First Day of School
Sep 7, 2026Labor Day - No School
Oct 2, 2026Early Dismissal - Homecoming
Oct 9, 2026Teachers Institute - No Student Attendance
Oct 12, 2026Columbus Day - No School
Oct 27, 2026Early Dismissal - P/T Conferences 3:30-6:30 p.m.
Oct 29, 2026Early Dismissal - P/T Conferences 3:30-6:30 p.m.
Oct 30, 2026No Student Attendance due to previous P/T Conferences
Nov 24, 2026Early Dismissal
Nov 25-27, 2026Thanksgiving Break - No School
Dec 17, 2026Early Dismissal
Dec 18, 2026School Improvement Day - No Student Attendance
Dec 21, 2026-Jan 1, 2027Christmas Break
Jan 4, 2027P/T Conferences - No Student Attendance
Jan 5, 2027Students Return
Jan 18, 2027Martin Luther King Jr. Day - No School
Feb 12, 2027School Improvement Day - No Student Attendance
Feb 15, 2027Lincoln's Birthday - No School
Feb 26, 2027Early Dismissal - Show Choir Invitational
Mar 12, 2027School Improvement Day - No Student Attendance
Mar 15-19, 2027Spring Break
Mar 26, 2027No School
Mar 29, 2027No School
Apr 23, 2027Emergency Day
Apr 30, 2027Emergency Day
May 7, 2027Emergency Day
May 14, 2027Emergency Day
May 21, 2027Emergency Day
May 23, 2027Graduation
May 27, 2027Early Dismissal - Last Day of Student Attendance
May 28, 2027Teachers Institute

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Sullivan CUSD #300 calendar FAQs

When is the first day of school in Sullivan CUSD #300 for 2026-2027?
The first day of school in Sullivan CUSD #300 is August 13, 2026.
When is Spring Break in Sullivan CUSD #300 for 2026-2027?
Spring Break in Sullivan CUSD #300 is from March 15 through March 19, 2027.
When is Christmas Break in Sullivan CUSD #300 for 2026-2027?
Christmas Break in Sullivan CUSD #300 is from December 21, 2026 through January 1, 2027.
When is Winter Break in Sullivan CUSD #300 for 2026-2027?
The calendar lists Christmas Break from December 21, 2026 through January 1, 2027, which serves as the winter break period.
When is Thanksgiving Break in Sullivan CUSD #300 for 2026-2027?
Thanksgiving Break in Sullivan CUSD #300 is from November 25 through November 27, 2026. There is also an early dismissal on November 24, 2026.
When is the last day of school in Sullivan CUSD #300 for 2026-2027?
The last day of student attendance in Sullivan CUSD #300 is May 27, 2027, with an early dismissal.
When is Labor Day in Sullivan CUSD #300 for 2026-2027?
Sullivan CUSD #300 will be closed for Labor Day on September 7, 2026.
When are Parent-Teacher Conferences in Sullivan CUSD #300 for 2026-2027?
Parent-Teacher Conferences are scheduled for October 27 and October 29, 2026, from 3:30 p.m. to 6:30 p.m., with early dismissal on both days. Another Parent-Teacher Conference day is January 4, 2027, with no student attendance.
When is Martin Luther King Jr. Day in Sullivan CUSD #300 for 2026-2027?
There will be no school on January 18, 2027, for Martin Luther King Jr. Day.
When are School Improvement Days in Sullivan CUSD #300 for 2026-2027?
School Improvement Days with no student attendance are December 18, 2026, February 12, 2027, and March 12, 2027.
When are Teachers Institute days in Sullivan CUSD #300 for 2026-2027?
Teachers Institute days are August 11, August 12, and October 9, 2026, with no student attendance. Another Teachers Institute day is May 28, 2027.
When is graduation in Sullivan CUSD #300 for 2026-2027?
Graduation is scheduled for May 23, 2027.
When are the emergency days in Sullivan CUSD #300 for 2026-2027?
Emergency days are scheduled for April 23, April 30, May 7, May 14, and May 21, 2027.

Dates can change after publication. Read our calendar disclaimer.