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Official School Calendar for Academic Year 2026–2027
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San Mateo Union High School District Calendar (2026-2027)
Calendar by educounty.net
| Date | Event |
|---|---|
| Aug 10, 2026 | Professional Development Day |
| Aug 12, 2026 | First Day of School (Students) |
| Sep 7, 2026 | Labor Day |
| Sep 10, 2026 | Back to School Night |
| Sep 11, 2026 | Minimum Day |
| Sep 18, 2026 | 6-week Marking Period |
| Oct 12, 2026 | Professional Development Day |
| Oct 30, 2026 | 6-week Marking Period |
| Nov 11, 2026 | Veterans Day (Observed) |
| Nov 25, 2026 | Staff Recess (No School for Students) |
| Nov 26-27, 2026 | Thanksgiving Break |
| Dec 16-17, 2026 | Minimum Day |
| Dec 18, 2026 | Minimum Day |
| Dec 18, 2026 | Fall Semester Ends (Students) |
| Dec 21, 2026 – Jan 5, 2027 | Winter Recess |
| Jan 5, 2027 | Fall Semester Ends (Teachers) |
| Jan 6, 2027 | Spring Semester Begins (Teachers) |
| Jan 6, 2027 | Spring Semester Begins (Students) |
| Jan 18, 2027 | Martin Luther King Jr. Day |
| Jan 25-26, 2027 | Professional Development Day |
| Feb 15, 2027 | Presidents’ Day |
| Feb 19, 2027 | 6-week Marking Period |
| Mar 11, 2027 | Open House |
| Mar 12, 2027 | Minimum Day |
| Mar 29 – Apr 2, 2027 | Spring Recess |
| Apr 9, 2027 | 6-week Marking Period |
| May 25-27, 2027 | Minimum Day |
| May 27, 2027 | Spring Semester Ends (Students) |
| May 28, 2027 | Spring Semester Ends (Teachers) |
| May 31, 2027 | Memorial Day |
San Mateo Union High School District Calendar 2026-2027 FAQs
When is the first day of school in San Mateo Union High School District for the 2026-2027 calendar year?
The first day of school for students in San Mateo Union High School District for the 2026-2027 calendar year is August 12, 2026.
When is spring break in San Mateo Union High School District for the 2026-2027 calendar year?
Spring break in San Mateo Union High School District for the 2026-2027 calendar year is from March 29 to April 2, 2027.
When is Christmas break in San Mateo Union High School District for the 2026-2027 calendar year?
Christmas break occurs during the winter recess from December 21, 2026 through January 5, 2027.
When is winter break in San Mateo Union High School District for the 2026-2027 calendar year?
Winter break for the 2026-2027 school calendar runs from December 21, 2026 to January 5, 2027.
When is Thanksgiving break in San Mateo Union High School District for the 2026-2027 calendar year?
Thanksgiving break takes place on November 26 and November 27, 2026. November 25, 2026 is a staff recess day with no school for students.
When is the last day of school in San Mateo Union High School District for the 2026-2027 calendar year?
The last day of school for students is May 27, 2027.
When does the spring semester begin in San Mateo Union High School District for the 2026-2027 calendar year?
The spring semester begins on January 6, 2027 for both students and teachers.
When is Martin Luther King Jr. Day in San Mateo Union High School District for the 2026-2027 calendar year?
Martin Luther King Jr. Day is observed on January 18, 2027.
When is Presidents’ Day in San Mateo Union High School District for the 2026-2027 calendar year?
Presidents’ Day is on February 15, 2027.
When is Memorial Day in San Mateo Union High School District for the 2026-2027 calendar year?
Memorial Day is observed on May 31, 2027.
Calendar Disclaimer
Dates are sourced from the official San Mateo Union High School SMUHSD Calendar 26-27 Revised [PDF] website. Dates may change at the discretion of the district. Always verify with the official school website for the latest updates.
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