Acalanes Union High School District Calendar 2026-2027
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The school calendar is essential for schools to coordinate and communicate with all of the students and parents of various classes and in different schools. Because of this, a school must maintain a proper calendar that delineates student and non-student days, school and non-school days, as well as the various breaks throughout the year.
This page contains the major holiday dates from the 2026 and 2027 school calendar for Acalanes Union High School District in California.
Please check back regularly for any amendments that may occur, or consult the Acalanes Union High School District website for their 2022-2023 approved calendar and 2023-2024 approved calendar. You may also wish to visit the school district homepage to check for any urgent or last-minute updates that may not have been incorporated into the official calendars.
Also note that we have incorporated non-student days such as teachers preparation days, teachers services days, and professional development days into the dates below. Visit the links above to view the full, original school calendar.
Here are the key dates from the Acalanes Union High School District 2025-2026 calendar, plus some notes.
📅 AUHSD 2025-2026 Key Calendar Dates
Table of Interests
| Date | Event |
|---|---|
| July 4, 2025 | Independence Day holiday |
| August 6-7, 2025 | Staff Development Days |
| August 8, 2025 | Institute Day |
| August 11, 2025 | Optional Teacher Work Day & Walk-thru Registration |
| August 12, 2025 | First Day of School (students) |
| August 28, 2025 | Back to School Night |
| September 1, 2025 | Labor Day — No School |
| October 10, 2025 | End of 1st Quarter |
| October 13, 2025 | Non-School Day |
| November 11, 2025 | Veteran’s Day — No School |
| November 24-28, 2025 | Thanksgiving Break |
| December 16-19, 2025 | 1st Semester Finals |
| December 19, 2025 | End of First Semester |
| December 22-31, 2025 & Jan 1-2, 2026 | Winter Break |
| January 5, 2026 | Optional Teacher Work Day |
| January 19, 2026 | Martin Luther King, Jr. Day — No School |
| January 29, 2026 | Open House |
| February 13-16, 2026 | Presidents’ Day weekend & Potential Weather Day |
| March 13, 2026 | End of 3rd Quarter |
| March 16, 2026 | Staff Development Day |
| March 30-April 3, 2026 | Spring Break |
| May 25, 2026 | Memorial Day — No School |
| May 26-29, 2026 | Second Semester Finals |
| May 29, 2026 | End of Second Semester / Last Day of School / Graduation |
| June 1, 2026 | Optional Teacher Work Day |
| June 19, 2026 | Juneteenth Holiday |
Acalanes Union High School District Calendar 2022-2023
| SCHOOL HOLIDAYS | STARTS | FINISHES |
|---|---|---|
| First Day of School | 9 Aug 2022 (Tue) | |
| Thanksgiving Break | 21 Nov 2022 (Mon) | 25 Nov 2022 (Fri) |
| Christmas Break | 19 Dec 2022 (Mon) | 3 Jan 2023 (Tue) |
| Mid Winter Break | 17 Feb 2023 (Fri) | 20 Feb 2023 (Mon) |
| Spring Break | 3 Apr 2023 (Mon) | 7 Apr 2023 (Fri) |
| Last Day of School | 26 May 2023 (Fri) | |
| Summer Break | 29 May 2023 (Mon) | 14 Aug 2023 (Mon) |
School Calendar 2023-2024
| SCHOOL HOLIDAYS | STARTS | FINISHES |
|---|---|---|
| First Day of School | 15 Aug 2023 (Tue) | |
| Thanksgiving Break | 20 Nov 2023 (Mon) | 24 Nov 2023 (Fri) |
| Christmas Break | 25 Dec 2023 (Mon) | 8 Jan 2024 (Mon) |
| Mid Winter Break | 16 Feb 2024 (Fri) | 19 Feb 2024 (Mon) |
| Spring Break | 1 Apr 2024 (Mon) | 5 Apr 2024 (Fri) |
| Last Day of School | 31 May 2024 (Fri) | |
| Summer Break | 3 Jun 2024 (Mon) |
