William S. Hart Union High School District Calendar 2026-2027

William S. Hart Union High School District starts school on August 11, 2026, earlier than 68 of the 103 other California districts we track (8 start the same day). Its spring break (Apr 5-9, 2027) is one week later than the most common California week, which starts March 29 (34 of 100 districts). The last day of school is Thursday, June 3, 2027.

Checking today…

First dayTue, Aug 11, 2026

Last dayThu, Jun 3, 2027

Spring breakApr 5-9, 2027back Mon, Apr 12, 2027

Winter breakDec 21 to Jan 8back Mon, Jan 11, 2027

All 2026-2027 dates

180 student days (district count) · Weekends are not listed. Past dates are dimmed.

William S. Hart Union High School District 2026-2027 District calendar (all schools) dates
Date	Event
Tue, Aug 11, 2026	First day of school
Mon, Sep 7, 2026	Labor Day
Mon, Oct 5, 2026	Fall Break · 1 school day off
Wed, Nov 11, 2026	Veterans Day
Mon, Nov 23 to Fri, Nov 27, 2026	Thanksgiving Break · 5 school days off
Fri, Dec 18, 2026	Teacher workday, no school for students
Mon, Dec 21, 2026 to Fri, Jan 8, 2027	Winter Break · 15 school days off
Mon, Jan 18, 2027	Martin Luther King Jr. Day
Fri, Feb 12, 2027	Non-Student Day
Mon, Feb 15, 2027	Presidents' Day
Mon, Apr 5 to Fri, Apr 9, 2027	Spring Break · 5 school days off
Mon, May 31, 2027	Memorial Day
Thu, Jun 3, 2027	Last day of school

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Verified against William S. Hart Union High School District’s official 2026-2027 calendar on September 29, 2026. Confidence: High.

Source: William S. Hart Union High School District 2026-2027 (PDF) · district calendar page

We fetch this document again every day and compare it with the version we verified; if the district changes it, the dates here are read again.

Note: Classes start for all students Aug 11, 2026. Semester 1 ends Dec 17 (finals Dec 14-17). Semester 2 starts Jan 11, 2027 and ends Jun 3, 2027 (finals Jun 1-3). Fall Break is a single day (Oct 5). Dec 18 is a Teacher Work Day with no school for students. The document lists 85 student days in Semester 1 and 95 in Semester 2 (180 total). Juneteenth (Jun 18, 2027) falls after the last day. The document has no approval statement (dated 5.7.26).

Break details

Long weekends in 2026-2027

Besides the breaks above, William S. Hart Union High School District students have 4 long weekends this school year: three or more days in a row without school.

Days off	Length	Why
Sat, Sep 5 to Mon, Sep 7	3 days	Labor Day
Sat, Jan 16 to Mon, Jan 18	3 days	Martin Luther King Jr. Day
Fri, Feb 12 to Mon, Feb 15	4 days	Non-Student Day; Presidents' Day
Sat, May 29 to Mon, May 31	3 days	Memorial Day

Nearby districts

Compare William S. Hart Union High School District with Saugus Union School District or any other district, with the days both are off.

District	First day	Spring break	Last day
William S. Hart Union High School District	Aug 11	Apr 5-9	Jun 3
Saugus Union School District	Aug 12	Apr 5-9	Jun 11
Simi Valley Unified School District	Aug 12	Mar 29 to Apr 5	Jun 4
Palmdale School District	Aug 10	Mar 22-26	Jun 3
Antelope Valley Union High School District	Aug 10	Mar 22-26	Jun 3
Los Angeles Unified School District	Aug 12	Mar 22-26	Jun 4
Alhambra Unified School District	Aug 13	Mar 29 to Apr 2	May 28

Frequently asked questions

When is spring break 2027 for William S. Hart Union High School District?

Spring break is Mon, Apr 5 to Fri, Apr 9, 2027. The last day of school before it is Friday, April 2, 2027, and students return Monday, April 12, 2027.

When does the 2026-2027 school year start and end for William S. Hart Union High School District?

The first day of school is Tuesday, August 11, 2026 and the last day is Thursday, June 3, 2027, 180 student days in total.

Is there school on Columbus Day / Indigenous Peoples’ Day in William S. Hart Union High School District?

Yes. Monday, October 12, 2026 is a regular school day on the 2026-2027 calendar.

Is there school on Good Friday in William S. Hart Union High School District?

Yes. Friday, March 26, 2027 is a regular school day on the 2026-2027 calendar.

Is there school on Martin Luther King Jr. Day in William S. Hart Union High School District?

No. Monday, January 18, 2027 is a day off for students (Martin Luther King Jr. Day).

Where do these William S. Hart Union High School District dates come from?

Source: the district's “William S. Hart Union High School District 2026-2027”, checked on September 29, 2026. We link the document on this page; if the district changes it, we update the dates and the “verified” date.

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About the district: William S. Hart Union High School District is based in Santa Clarita, California (Los Angeles County), with about 20,493 students in 16 schools (NCES Common Core of Data, 2024-25). District website: www.hartdistrict.org. See all California school calendars.