Visual Calendar
Official calendar scans for Mt Diablo Unified School District. Click any image to open full-screen.
School Calendar
Download Mt Diablo Unified School District's 2026–2027 academic calendar PDF — holidays, breaks, and key dates.
For the 2026–2027 school year, the district serves 30,000 students across 50 schools in Northern California, California. Classes begin August 5, 2026 and end June 10, 2027, with 180 instructional days planned. All dates listed below are sourced from the district's official publications. Verify with Mt Diablo Unified School District before scheduling around them.
About the District
Details and contact information for Mt Diablo Unified School District USD.
Common Questions
Mt Diablo Unified School District Calendar 2026–2027 — important dates and answers.
The first day of school in Mt Diablo Unified School District for the 2026-2027 school year is August 5, 2026.
Thanksgiving break in Mt Diablo Unified School District runs from November 23 to November 27, 2026.
Winter break in Mt Diablo Unified School District begins on December 21, 2026 and ends on January 1, 2027.
Christmas break is part of the winter recess in Mt Diablo Unified School District and takes place from December 21, 2026 through January 1, 2027.
Spring break in Mt Diablo Unified School District is scheduled from April 5 to April 9, 2027.
The last day of school in Mt Diablo Unified School District for the 2026-2027 school year is June 10, 2027.
No school days include Labor Day on September 7, 2026, Indigenous Peoples’ Day on October 12, 2026, Veterans Day on November 11, 2026, Martin Luther King Jr. Day on January 18, 2027, Lincoln Day on February 12, 2027, Presidents’ Day on February 15, 2027, and Memorial Day on May 31, 2027.
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