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McHenry CCSD 15 — District Profile & Schools

Mchenry, Illinois · McHenry County

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Key Dates — McHenry CCSD 15 School Calendar

The first day of school in McHenry CCSD 15 is Mon, Aug 17, 2026, and the last day of school is Wed, May 26, 2027, according to the district's published calendar. Scheduled breaks include Thanksgiving Break - No School (Wed, Nov 25, 2026 to Fri, Nov 27, 2026), Winter Recess - No School (Mon, Dec 21, 2026 to Fri, Jan 1, 2027), Spring Recess - No School (Mon, Mar 29, 2027 to Fri, Apr 2, 2027).

First day of school
Mon, Aug 17, 2026
Last day of school
Wed, May 26, 2027
Thanksgiving Break - No School
Wed, Nov 25, 2026 to Fri, Nov 27, 2026
Winter Recess - No School
Mon, Dec 21, 2026 to Fri, Jan 1, 2027
Spring Recess - No School
Mon, Mar 29, 2027 to Fri, Apr 2, 2027
Labor Day - No School
Mon, Sep 7, 2026
No School - Parent Teacher Conferences
Mon, Nov 23, 2026 to Tue, Nov 24, 2026
Martin Luther King Jr. Day - No School
Mon, Jan 18, 2027
Presidents? Day - No School
Mon, Feb 15, 2027
4,049
Students
8
Schools
6 elem · 2 mid · 0 high
11.9:1
Student-Teacher
340 teachers
-1 - 8
Grades

Quick Facts

506
Avg. School Size
543
Total Staff

McHenry CCSD 15 Calendar

44 events

Mon, Aug 17

Event

First Day for Teachers - Teacher Institute Day

Tue, Aug 18

PD Day

Teacher Institute Day

Wed, Aug 19

Event

First Day for Students

Mon, Sep 7

Holiday

Labor Day - No School

Fri, Sep 18

Early Dismissal

Early Release

Fri, Oct 9

PD Day

Teacher Institute Day

Mon, Oct 12

PD Day

Day of Non-Attendance Students and Teachers

Fri, Nov 6

Early Dismissal

Early Release Day / End of 1st Trimester

Mon, Nov 23

PD Day

No School - Parent Teacher Conferences

Tue, Nov 24

PD Day

No School - Parent Teacher Conferences

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Data source: official McHenry CCSD 15 website · Last verified Jul 6, 2026 · How we verify this data

Contact

Address
1011 N Green St
Mchenry, IL 60050
Phone
(779)244-1000

Staff & Students

Teachers (FTE)
340
Total Staff
543
Data Source
NCES Common Core of Data
School Year 2023-24

Frequently Asked Questions about McHenry CCSD 15

The first day of school in McHenry CCSD 15 is Mon, Aug 17, 2026, according to the district's published calendar.

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