For the 2026–2027 school year, the district serves 4,500 students across 10 schools in Illinois. Classes begin August 19, 2026 and end June 2, 2027, with 180 instructional days planned. All dates listed below are sourced from the district's official publications. Verify with Cook County School District 104 before scheduling around them.
Visual Calendar
Official Calendar Images
Official calendar scans for Cook County School District 104. Click any page to open the full-size image.
School Calendar
Interactive Calendar
Cook County School District 104's 2026–2027 academic calendar — holidays, breaks, and key dates.
Month by Month Calendar
About the District
School Information
Details and contact information for Cook County School District 104.
Sources and Checks
Where these dates come from
How the 2026–2027 Cook County School District 104 calendar on this page was compiled and what to re-check before you rely on it.
- ✓District publication. Dates are taken from the calendar Cook County School District 104 published for 2026–2027, shown as images on this page.
- ✓Official website. Cross-checked against sd104.us.
- ✓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 Cook County School District 104 before booking around a date.
Common Questions
Frequently Asked Questions
Cook County School District 104 Calendar 2026–2027 — important dates and answers.
The first day of school for students in Grades 1-8 is Wednesday, August 19, 2026. Kindergarten students begin school on Friday, August 21, 2026.
Spring Break is scheduled from Monday, March 22, 2027, through Monday, March 29, 2027. Classes resume on Tuesday, March 30, 2027.
Christmas Break begins on Wednesday, December 23, 2026, and continues through Friday, January 8, 2027.
Winter Break runs from December 23, 2026, through January 8, 2027. Students return to school on Monday, January 11, 2027.
Thanksgiving Break includes Wednesday, November 25, 2026 (Non-Attendance Day), Thursday, November 26, 2026 (Thanksgiving), and Friday, November 27, 2026 (Non-Attendance Day). Classes resume on Monday, November 30, 2026.
The last day of school is Wednesday, June 2, 2027. Students will be dismissed early at 1:00 PM.
Labor Day is observed on Monday, September 7, 2026, and there is no school.
Indigenous Peoples Day is observed on Monday, October 12, 2026. There is no school on this day.
The first trimester ends on Friday, November 13, 2026.
Parent-Teacher Conferences are scheduled for Monday, November 23, 2026. There is no school for students on this day.
Martin Luther King Jr. Day is observed on Monday, January 18, 2027. Schools are closed.
Presidents Day is observed on Monday, February 15, 2027. There is no school.
The second trimester ends on Thursday, February 25, 2027.
Casimir Pulaski Day is observed on Monday, March 1, 2027. There is no school.
Memorial Day is observed on Monday, May 31, 2027. Schools are closed.
Yes. The calendar designates June 3-9, 2027 as emergency (XED) days, which will only be used if emergency school closures occur during the school year.
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