For the 2026–2027 school year, the district serves 4,200 students across 8 schools in Illinois. Classes begin August 19, 2026 and end May 26, 2027, with 180 instructional days planned. All dates listed below are sourced from the district's official publications. Verify with McHenry Community Consolidated School District 15 before scheduling around them.
Visual Calendar
Official Calendar Images
Official calendar scans for McHenry Community Consolidated School District 15. Click any page to open the full-size image.
School Calendar
Interactive Calendar
McHenry Community Consolidated School District 15's 2026–2027 academic calendar — holidays, breaks, and key dates.
Month by Month Calendar
About the District
School Information
Details and contact information for McHenry Community Consolidated School District 15.
Sources and Checks
Where these dates come from
How the 2026–2027 McHenry Community Consolidated School District 15 calendar on this page was compiled and what to re-check before you rely on it.
- ✓District publication. Dates are taken from the calendar McHenry Community Consolidated School District 15 published for 2026–2027, shown as images on this page.
- ✓Official website. Cross-checked against d15.org.
- ✓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 McHenry Community Consolidated School District 15 before booking around a date.
Common Questions
Frequently Asked Questions
McHenry Community Consolidated School District 15 Calendar 2026–2027 — important dates and answers.
The first day of school in McHenry School District 15 for the 2026-2027 school year is August 19, 2026.
Spring break (Spring Recess) is from March 29, 2027 to April 2, 2027.
Christmas break is part of the Winter Recess from December 21, 2026 to January 1, 2027.
Winter break runs from December 21, 2026 through January 1, 2027.
Thanksgiving break is from November 25 to November 27, 2026.
The last day of school is May 26, 2027 (if no emergency days are used).
Classes resume on January 4, 2027 after winter break.
Labor Day is observed on September 7, 2026 and there is no school.
Martin Luther King Jr. Day is on January 18, 2027 and there is no school.
Presidents' Day is on February 15, 2027 and schools are closed.
Parent-Teacher Conferences are scheduled for November 23 and November 24, 2026, and there is no school on those days.
Trimester 1 ends on November 6, 2026.
Trimester 2 ends on February 19, 2027.
Trimester 3 ends on May 26, 2027.
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