Lyons SD 103 School Calendar 2025-2026
Lyons SD 103 is a public school district in Illinois serving 2,148 students. This page covers the 2025-2026 school year with day-level calendar data.
This district is part of the Chicago-Naperville-Elgin, IL-IN metropolitan area.
2,148
Enrollment
168
School Days
43
Break Days
2025-2026
School Year
Calendar Summary
First Day of School
August 20, 2025
Last Day of School
May 29, 2026
NCES District ID
1723850
State
Illinois
Breaks & Holidays
Scheduled breaks and holidays for Lyons SD 103 during 2025-2026 (excludes weekends and summer):
| Break | Start | End | Days |
|---|---|---|---|
| Teacher Institute | Aug 15 | Aug 19 | 3 |
| Labor Day | Sep 1 | Sep 1 | 1 |
| School Improvement Day (Sip) | Sep 10 | Sep 10 | 1 |
| School Improvement Day (Sip) | Oct 8 | Oct 8 | 1 |
| Columbus/Indigenous Day | Oct 13 | Oct 13 | 1 |
| End Of 1St Quarter | Oct 17 | Oct 17 | 1 |
| School Improvement Day (Sip) | Nov 5 | Nov 5 | 1 |
| Thanksgiving Break | Nov 24 | Nov 26 | 3 |
| Thanksgiving Day | Nov 27 | Nov 27 | 1 |
| Thanksgiving Break | Nov 28 | Nov 28 | 1 |
| Winter Break | Dec 22 | Dec 24 | 3 |
| Christmas Break | Dec 25 | Dec 25 | 1 |
| Winter Break | Dec 26 | Dec 31 | 6 |
| New Year'S Day | Jan 1 | Jan 1 | 1 |
| Winter Break | Jan 2 | Jan 2 | 1 |
| Ml King Day | Jan 19 | Jan 19 | 1 |
| School Improvement Day (Sip) | Feb 4 | Feb 4 | 1 |
| Presidents' Day | Feb 16 | Feb 16 | 1 |
| School Improvement Day (Sip) | Mar 4 | Mar 4 | 1 |
| End Of 3Rd Quarter | Mar 13 | Mar 13 | 1 |
| Spring Break | Mar 30 | Apr 2 | 4 |
| Good Friday | Apr 3 | Apr 3 | 1 |
| Spring Break | Apr 4 | Apr 6 | 3 |
| Teacher Institute | Apr 20 | Apr 20 | 1 |
| School Improvement Day (Sip) | May 6 | May 6 | 1 |
| Memorial Day | May 25 | May 25 | 1 |
| Juneteenth | Jun 19 | Jun 19 | 1 |
School Year Calendar
Visual calendar for Lyons SD 103, July 2025 through June 2026:
Jul 2025
| M | T | W | T | F | S | S |
|---|---|---|---|---|---|---|
| 1 | 2 | 3 | 4 | 5 | 6 | |
| 7 | 8 | 9 | 10 | 11 | 12 | 13 |
| 14 | 15 | 16 | 17 | 18 | 19 | 20 |
| 21 | 22 | 23 | 24 | 25 | 26 | 27 |
| 28 | 29 | 30 | 31 |
Aug 2025
| M | T | W | T | F | S | S |
|---|---|---|---|---|---|---|
| 1 | 2 | 3 | ||||
| 4 | 5 | 6 | 7 | 8 | 9 | 10 |
| 11 | 12 | 13 | 14 | 15 | 16 | 17 |
| 18 | 19 | 20 | 21 | 22 | 23 | 24 |
| 25 | 26 | 27 | 28 | 29 | 30 | 31 |
Sep 2025
| M | T | W | T | F | S | S |
|---|---|---|---|---|---|---|
| 1 | 2 | 3 | 4 | 5 | 6 | 7 |
| 8 | 9 | 10 | 11 | 12 | 13 | 14 |
| 15 | 16 | 17 | 18 | 19 | 20 | 21 |
| 22 | 23 | 24 | 25 | 26 | 27 | 28 |
| 29 | 30 |
Oct 2025
| M | T | W | T | F | S | S |
|---|---|---|---|---|---|---|
| 1 | 2 | 3 | 4 | 5 | ||
| 6 | 7 | 8 | 9 | 10 | 11 | 12 |
| 13 | 14 | 15 | 16 | 17 | 18 | 19 |
| 20 | 21 | 22 | 23 | 24 | 25 | 26 |
| 27 | 28 | 29 | 30 | 31 |
Nov 2025
| M | T | W | T | F | S | S |
|---|---|---|---|---|---|---|
| 1 | 2 | |||||
| 3 | 4 | 5 | 6 | 7 | 8 | 9 |
| 10 | 11 | 12 | 13 | 14 | 15 | 16 |
| 17 | 18 | 19 | 20 | 21 | 22 | 23 |
| 24 | 25 | 26 | 27 | 28 | 29 | 30 |
Dec 2025
| M | T | W | T | F | S | S |
|---|---|---|---|---|---|---|
| 1 | 2 | 3 | 4 | 5 | 6 | 7 |
| 8 | 9 | 10 | 11 | 12 | 13 | 14 |
| 15 | 16 | 17 | 18 | 19 | 20 | 21 |
| 22 | 23 | 24 | 25 | 26 | 27 | 28 |
| 29 | 30 | 31 |
Jan 2026
| M | T | W | T | F | S | S |
|---|---|---|---|---|---|---|
| 1 | 2 | 3 | 4 | |||
| 5 | 6 | 7 | 8 | 9 | 10 | 11 |
| 12 | 13 | 14 | 15 | 16 | 17 | 18 |
| 19 | 20 | 21 | 22 | 23 | 24 | 25 |
| 26 | 27 | 28 | 29 | 30 | 31 |
Feb 2026
| M | T | W | T | F | S | S |
|---|---|---|---|---|---|---|
| 1 | ||||||
| 2 | 3 | 4 | 5 | 6 | 7 | 8 |
| 9 | 10 | 11 | 12 | 13 | 14 | 15 |
| 16 | 17 | 18 | 19 | 20 | 21 | 22 |
| 23 | 24 | 25 | 26 | 27 | 28 |
Mar 2026
| M | T | W | T | F | S | S |
|---|---|---|---|---|---|---|
| 1 | ||||||
| 2 | 3 | 4 | 5 | 6 | 7 | 8 |
| 9 | 10 | 11 | 12 | 13 | 14 | 15 |
| 16 | 17 | 18 | 19 | 20 | 21 | 22 |
| 23 | 24 | 25 | 26 | 27 | 28 | 29 |
| 30 | 31 |
Apr 2026
| M | T | W | T | F | S | S |
|---|---|---|---|---|---|---|
| 1 | 2 | 3 | 4 | 5 | ||
| 6 | 7 | 8 | 9 | 10 | 11 | 12 |
| 13 | 14 | 15 | 16 | 17 | 18 | 19 |
| 20 | 21 | 22 | 23 | 24 | 25 | 26 |
| 27 | 28 | 29 | 30 |
May 2026
| M | T | W | T | F | S | S |
|---|---|---|---|---|---|---|
| 1 | 2 | 3 | ||||
| 4 | 5 | 6 | 7 | 8 | 9 | 10 |
| 11 | 12 | 13 | 14 | 15 | 16 | 17 |
| 18 | 19 | 20 | 21 | 22 | 23 | 24 |
| 25 | 26 | 27 | 28 | 29 | 30 | 31 |
Jun 2026
| M | T | W | T | F | S | S |
|---|---|---|---|---|---|---|
| 1 | 2 | 3 | 4 | 5 | 6 | 7 |
| 8 | 9 | 10 | 11 | 12 | 13 | 14 |
| 15 | 16 | 17 | 18 | 19 | 20 | 21 |
| 22 | 23 | 24 | 25 | 26 | 27 | 28 |
| 29 | 30 |
In SessionBreak/HolidayWeekend
Multi-Year Comparison
Calendar data across school years for Lyons SD 103:
| School Year | First Day | Last Day | School Days | Break Days |
|---|---|---|---|---|
| 2024-2025 | Aug 20 | May 30 | 167 | 43 |
| 2025-2026 | Aug 20 | May 29 | 168 | 43 |
| 2026-2027 | Aug 19 | May 27 | 202 | 0 |
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