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McHenry School District D15 IL Calendar 26-27

  • 2026/27
  • Illinois
  • 3 teacher days

The McHenry School District D15 2026–27 school year runs from Aug 19, 2026 to May 25, 2027. Breaks include Thanksgiving break Nov 25-27, winter break Dec 21 - Jan 1, and spring break Mar 29 - Apr 2. 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 19, 2026 First Day of School
School year ends Wed, May 26, 2027 Early Release Day / End of Trimester 3 / Last Day of School
Next key date Wed, Aug 19, 2026 Counts down once the school year is under way

McHenry School District D15 2026-27 calendar

Select a thumbnail to open it full size, zoom in, or download it.

McHenry School District D15 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
  • Teacher / professional day
  • Early release / half day
  • Parent-teacher conference
  • Grading period / report cards
  • Other scheduled date

August 2026

  • Aug 17-18, 2026 — Teacher Institute Day - No School
  • Aug 19, 2026 — First Day of School

September 2026

  • Sep 7, 2026 — Labor Day - No School
  • Sep 18, 2026 — Early Release Day

October 2026

  • Oct 9, 2026 — Teacher Institute Day - No School
  • Oct 12, 2026 — No School

November 2026

  • Nov 6, 2026 — Early Release Day / End of Trimester 1
  • Nov 23-24, 2026 — Parent Teacher Conferences - No School
  • Nov 25-27, 2026 — Thanksgiving Break - No School

December 2026

  • Dec 18, 2026 — Early Release Day
  • Dec 21, 2026 - Jan 1, 2027 — Winter Recess - No School

January 2027

  • Dec 21, 2026 - Jan 1, 2027 — Winter Recess - No School
  • Jan 4, 2027 — Classes Resume
  • Jan 15, 2027 — Early Release Day
  • Jan 18, 2027 — Martin Luther King Jr. Day - No School

February 2027

  • Feb 12, 2027 — Teacher Institute Day - No School
  • Feb 15, 2027 — Presidents' Day - No School
  • Feb 19, 2027 — End of Trimester 2

March 2027

  • Mar 26, 2027 — Day of Non Attendance - No School
  • Mar 29 - Apr 2, 2027 — Spring Recess - No School

April 2027

  • Mar 29 - Apr 2, 2027 — Spring Recess - No School
  • Apr 5, 2027 — Classes Resume
  • Apr 23, 2027 — Early Release Day

May 2027

  • May 25, 2027 — Last Day of School for PreK
  • May 26, 2027 — Early Release Day / End of Trimester 3 / Last Day of School

June 2027

July 2027

McHenry School District D15 teacher and staff days 2026/27

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

  • Aug 17-18, 2026 Teacher Institute Day - No School District source
  • Oct 9, 2026 Teacher Institute Day - No School District source
  • Feb 12, 2027 Teacher Institute Day - No School District source

McHenry School District D15 breaks and holidays

School is closed to students on these dates.

  • Sep 7, 2026 Labor Day - No School Holiday
  • Oct 12, 2026 No School Holiday
  • Nov 25-27, 2026 Thanksgiving Break - No School Break
  • Dec 21, 2026 - Jan 1, 2027 Winter Recess - No School Break
  • Jan 18, 2027 Martin Luther King Jr. Day - No School Holiday
  • Feb 15, 2027 Presidents' Day - No School Holiday
  • Mar 26, 2027 Day of Non Attendance - No School Holiday
  • Mar 29 - Apr 2, 2027 Spring Recess - No School Break

Your checked 2026/27 McHenry School District D15 planning calendar

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

Useful now23 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

McHenry School District D15 2026–27 calendar dates

DateEvent
Aug 17-18, 2026Teacher Institute Day - No School
Aug 19, 2026First Day of School
Sep 7, 2026Labor Day - No School
Sep 18, 2026Early Release Day
Oct 9, 2026Teacher Institute Day - No School
Oct 12, 2026No School
Nov 6, 2026Early Release Day / End of Trimester 1
Nov 23-24, 2026Parent Teacher Conferences - No School
Nov 25-27, 2026Thanksgiving Break - No School
Dec 18, 2026Early Release Day
Dec 21, 2026 - Jan 1, 2027Winter Recess - No School
Jan 4, 2027Classes Resume
Jan 15, 2027Early Release Day
Jan 18, 2027Martin Luther King Jr. Day - No School
Feb 12, 2027Teacher Institute Day - No School
Feb 15, 2027Presidents' Day - No School
Feb 19, 2027End of Trimester 2
Mar 26, 2027Day of Non Attendance - No School
Mar 29 - Apr 2, 2027Spring Recess - No School
Apr 5, 2027Classes Resume
Apr 23, 2027Early Release Day
May 25, 2027Last Day of School for PreK
May 26, 2027Early Release Day / End of Trimester 3 / Last Day of School

McHenry School District 15 2026-2027 Calendar FAQs

When is the first day of school in McHenry School District 15 2026-2027?
The first day of school in McHenry School District 15 for the 2026-2027 school year is August 19, 2026.
When is spring break in McHenry School District 15 2026-2027?
Spring break (Spring Recess) is from March 29, 2027 to April 2, 2027.
When is Christmas break in McHenry School District 15 2026-2027?
Christmas break is part of the Winter Recess from December 21, 2026 to January 1, 2027.
When is winter break in McHenry School District 15 2026-2027?
Winter break runs from December 21, 2026 through January 1, 2027.
When is Thanksgiving break in McHenry School District 15 2026-2027?
Thanksgiving break is from November 25 to November 27, 2026.
When is the last day of school in McHenry School District 15 2026-2027?
The last day of school is May 26, 2027 (if no emergency days are used).
When do classes resume after winter break in McHenry School District 15 2026-2027?
Classes resume on January 4, 2027 after winter break.
When is Labor Day holiday in McHenry School District 15 2026-2027?
Labor Day is observed on September 7, 2026 and there is no school.
When is Martin Luther King Jr. Day in McHenry School District 15 2026-2027?
Martin Luther King Jr. Day is on January 18, 2027 and there is no school.
When is Presidents' Day in McHenry School District 15 2026-2027?
Presidents' Day is on February 15, 2027 and schools are closed.
When are Parent-Teacher Conferences in McHenry School District 15 2026-2027?
Parent-Teacher Conferences are scheduled for November 23 and November 24, 2026, and there is no school on those days.
When is the end of Trimester 1 in McHenry School District 15 2026-2027?
Trimester 1 ends on November 6, 2026.
When is the end of Trimester 2 in McHenry School District 15 2026-2027?
Trimester 2 ends on February 19, 2027.
When is the end of Trimester 3 in McHenry School District 15 2026-2027?
Trimester 3 ends on May 26, 2027.

Useful next steps

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McHenry School District D15 calendar FAQs

When is the first day of school in McHenry School District 15 2026-2027?
The first day of school in McHenry School District 15 for the 2026-2027 school year is August 19, 2026.
When is spring break in McHenry School District 15 2026-2027?
Spring break (Spring Recess) is from March 29, 2027 to April 2, 2027.
When is Christmas break in McHenry School District 15 2026-2027?
Christmas break is part of the Winter Recess from December 21, 2026 to January 1, 2027.
When is winter break in McHenry School District 15 2026-2027?
Winter break runs from December 21, 2026 through January 1, 2027.
When is Thanksgiving break in McHenry School District 15 2026-2027?
Thanksgiving break is from November 25 to November 27, 2026.
When is the last day of school in McHenry School District 15 2026-2027?
The last day of school is May 26, 2027 (if no emergency days are used).
When do classes resume after winter break in McHenry School District 15 2026-2027?
Classes resume on January 4, 2027 after winter break.
When is Labor Day holiday in McHenry School District 15 2026-2027?
Labor Day is observed on September 7, 2026 and there is no school.
When is Martin Luther King Jr. Day in McHenry School District 15 2026-2027?
Martin Luther King Jr. Day is on January 18, 2027 and there is no school.
When is Presidents' Day in McHenry School District 15 2026-2027?
Presidents' Day is on February 15, 2027 and schools are closed.
When are Parent-Teacher Conferences in McHenry School District 15 2026-2027?
Parent-Teacher Conferences are scheduled for November 23 and November 24, 2026, and there is no school on those days.
When is the end of Trimester 1 in McHenry School District 15 2026-2027?
Trimester 1 ends on November 6, 2026.
When is the end of Trimester 2 in McHenry School District 15 2026-2027?
Trimester 2 ends on February 19, 2027.
When is the end of Trimester 3 in McHenry School District 15 2026-2027?
Trimester 3 ends on May 26, 2027.

Dates can change after publication. Read our calendar disclaimer.