Visual Calendar
Official calendar scans for Mt Diablo Unified School District. Click any image to open full-screen.
Official Document
The official calendar PDF published by Mt Diablo Unified School District. Download or view inline.
School Calendar
Month-by-month view of Mt Diablo Unified School District's 2026–2027 academic calendar — holidays, breaks, and key dates.
About the District
Details and contact information for Mt Diablo Unified School District.
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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Other California school district calendars — recently added or updated.