For the 2026–2027 school year, Sullivan Cusd #300 publishes its official academic calendar for Illinois. Classes begin Aug 13 and end May 27. All dates listed below are sourced from the district's official publications. Verify with Sullivan Cusd #300 before scheduling around them.
Visual Calendar
Official Calendar Images
Official calendar scans for Sullivan Cusd #300. Click any page to open the full-size image.
School Calendar
Interactive Calendar
Sullivan Cusd #300's 2026–2027 academic calendar — holidays, breaks, and key dates.
Month by Month Calendar
- Teachers Institute - No Student AttendanceAug 11, 2026Teacher Day
- Teachers Institute - No Student AttendanceAug 12, 2026Teacher Day
- First Day of SchoolAug 13, 2026School Opens
- Labor Day - No SchoolSep 7, 2026No School
- Early Dismissal - HomecomingOct 2, 2026Event
- Teachers Institute - No Student AttendanceOct 9, 2026Teacher Day
- Columbus Day - No SchoolOct 12, 2026No School
- Early Dismissal - P/T Conferences 3:30-6:30 p.m.Oct 27, 2026Event
- Early Dismissal - P/T Conferences 3:30-6:30 p.m.Oct 29, 2026Event
- No Student Attendance due to previous P/T ConferencesOct 30, 2026Event
- Early DismissalNov 24, 2026Event
- Thanksgiving Break - No SchoolNov 25 — Nov 27No School
- Early DismissalDec 17, 2026Event
- School Improvement Day - No Student AttendanceDec 18, 2026Event
- Christmas BreakDec 21 — Jan 1No School
- P/T Conferences - No Student AttendanceJan 4, 2027Event
- Martin Luther King Jr. Day - No SchoolJan 18, 2027No School
- School Improvement Day - No Student AttendanceFeb 12, 2027Event
- Lincoln's Birthday - No SchoolFeb 15, 2027No School
- Early Dismissal - Show Choir InvitationalFeb 26, 2027Event
- School Improvement Day - No Student AttendanceMar 12, 2027Event
- Spring BreakMar 15 — Mar 19No School
- No SchoolMar 26, 2027No School
- No SchoolMar 29, 2027No School
- Emergency DayApr 23, 2027Event
- Emergency DayApr 30, 2027Event
- Emergency DayMay 7, 2027Event
- Emergency DayMay 14, 2027Event
- Emergency DayMay 21, 2027Event
- GraduationMay 23, 2027Event
- Early Dismissal - Last Day of Student AttendanceMay 27, 2027School Closes
- Teachers InstituteMay 28, 2027Teacher Day
About the District
School Information
Details and contact information for Sullivan Cusd #300.
Sources and Checks
Where these dates come from
How the 2026–2027 Sullivan Cusd #300 calendar on this page was compiled and what to re-check before you rely on it.
- ✓District publication. Dates are taken from the calendar Sullivan Cusd #300 published for 2026–2027, shown as images on this page.
- ✓Official website. Cross-checked against educounty.net.
- ✓Board-approved version is used where the district marks one.
- ✓First and last day match the published calendar.
- ✓Breaks and holidays are listed with their full date ranges.
- ✓Teacher / no-school days are included where the district lists them.
- ✓Changes happen. Districts amend calendars mid-year — confirm with Sullivan Cusd #300 before booking around a date.
Common Questions
Frequently Asked Questions
Sullivan Cusd #300 Calendar 2026–2027 — important dates and answers.
The first day of school in Sullivan CUSD #300 is August 13, 2026.
Spring Break in Sullivan CUSD #300 is from March 15 through March 19, 2027.
Christmas Break in Sullivan CUSD #300 is from December 21, 2026 through January 1, 2027.
The calendar lists Christmas Break from December 21, 2026 through January 1, 2027, which serves as the winter break period.
Thanksgiving Break in Sullivan CUSD #300 is from November 25 through November 27, 2026. There is also an early dismissal on November 24, 2026.
The last day of student attendance in Sullivan CUSD #300 is May 27, 2027, with an early dismissal.
Sullivan CUSD #300 will be closed for Labor Day on September 7, 2026.
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.
There will be no school on January 18, 2027, for Martin Luther King Jr. Day.
School Improvement Days with no student attendance are December 18, 2026, February 12, 2027, and March 12, 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.
Graduation is scheduled for May 23, 2027.
Emergency days are scheduled for April 23, April 30, May 7, May 14, and May 21, 2027.
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