Visual Calendar
Official calendar scans for San Mateo Union High School District SMUHSD. Click any image to open full-screen.
School Calendar
Download San Mateo Union High School District SMUHSD's 2026–2027 academic calendar PDF — holidays, breaks, and key dates.
About the District
Details and contact information for San Mateo Union High School District SMUHSD (HSD).
Common Questions
San Mateo Union High School District SMUHSD Calendar 2026–2027 — important dates and answers.
The first day of school for students in San Mateo Union High School District for the 2026-2027 school year is August 12, 2026.
Spring Break in San Mateo Union High School District for the 2026-2027 school year is from March 29, 2027 through April 2, 2027.
Christmas Break in San Mateo Union High School District for the 2026-2027 school year begins on December 21, 2026.
Winter Break in San Mateo Union High School District for the 2026-2027 school year is from December 21, 2026 to January 5, 2027.
Thanksgiving Break in San Mateo Union High School District for the 2026-2027 school year is on November 26-27, 2026.
The last day of school for students in San Mateo Union High School District for the 2026-2027 school year is May 27, 2027.
Labor Day in San Mateo Union High School District for the 2026-2027 school year is September 7, 2026.
Martin Luther King Jr. Day in San Mateo Union High School District for the 2026-2027 school year is January 18, 2027.
Presidents' Day in San Mateo Union High School District for the 2026-2027 school year is February 15, 2027.
Memorial Day in San Mateo Union High School District for the 2026-2027 school year is May 31, 2027.
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