Mt. Diablo Unified School District school calendar
Next day off: Monday, October 12 (Indigenous Peoples Day); next break: School Recess, November 23 to 27.
Official district PDF
2026–27 calendar
2026–27 at a glance
The dates families usually look for first.
- October days off
- Oct 5–9
What happens in Mavo
One read-only school calendar that rolls forward each year.
Create your free account, name your family home, and add this school calendar. Mavo opens the next school date so you can add who’s handling it. When Mt. Diablo Unified School District publishes another school year, it appears in the same linked calendar.
The source controls the schedule, so synced dates stay read-only. You can still add the family details Mavo knows about—who’s handling it, attendance, place, notes, and a clearer title.
One school calendar is included on Free. Everyday includes more school calendars and other outside calendar links.
Your school dates in Mavo
Mt. Diablo Unified School District school calendar
Independence Day (Observed)
Mt. Diablo Unified School District 2026–27 · Read-only
Teacher In-Service Days
Mt. Diablo Unified School District 2026–27 · Read-only
First Student Day
Mt. Diablo Unified School District 2026–27 · Read-only
Labor Day
Mt. Diablo Unified School District 2026–27 · Read-only
Free calendar updates
Add the Mt. Diablo Unified School District calendar
Includes 2026–27. We add each new school year after Mt. Diablo Unified School District publishes it.
Full district calendar
Current and upcoming Mt. Diablo Unified School District dates
Staff-only summer work days are left out. Student holidays caused by staff development are included because they change the family schedule.
Current calendar
2026–27 student dates
- No school
Independence Day (Observed)
Independence Day (Observed); district holiday.
- No school
Teacher In-Service Days
Students do not attend on the all-teacher in-service days.
- School date
First Student Day
First student day of the 2026–2027 school year.
- No school
Labor Day
Labor Day; students do not attend.
- School date
End of First Quarter
End of the first quarter.
- No school
Fall Recess
Fall recess; students do not attend.
- No school
Indigenous Peoples Day
Indigenous Peoples Day; students do not attend. School resumes October 13.
- School date
School Resumes
School resumes.
- No school
Teacher In-Service Day
Students do not attend; the calendar identifies this as a teacher in-service, non-student day.
- School date
End of First Trimester
End of the first trimester.
- School date
Caregiver Conferences (TK–5th Grade)
Caregiver conferences for TK–5th grade; the calendar lists the conference range but does not specify individual appointment times.
- No school
Veterans Day
Veterans Day; students do not attend.
- No school
School Recess
School recess; students do not attend. This range includes Thanksgiving Day and the Board Holiday.
- School date
School Resumes
School resumes after recess.
- School date
End of First Semester and Second Quarter
End of the first semester and second quarter.
- No school
Winter Recess
Winter recess; students do not attend. The range includes Christmas Day and New Year's Day.
- School date
School Resumes
School resumes after winter recess.
- No school
Martin Luther King Day
Martin Luther King Day; students do not attend.
- No school
Presidents Day
Presidents Day; students do not attend.
- School date
End of Second Trimester
End of the second trimester.
- School date
End of Third Quarter
End of the third quarter.
- No school
Teacher In-Service Day
Students do not attend on the all-teacher in-service day.
- No school
Farmworkers Day
Farmworkers Day; students do not attend.
- No school
Spring Recess
Spring recess; students do not attend. The Board Holiday on April 9 falls within this recess.
- School date
School Resumes
School resumes after spring recess.
- No school
Memorial Day
Memorial Day; students do not attend.
- School date
Last Student Day; End of Second Semester, Fourth Quarter, and Third Trimester
Last student day; also the end of the second semester, fourth quarter, and third trimester.
- No school
Juneteenth (Observed)
Juneteenth (Observed); district holiday.
Recognizable source. Easier calendar.
This page is an independent convenience copy. Mt. Diablo Unified School District's PDFs remain the source of truth, and dates can change after publication.
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Add the Mt. Diablo Unified School District calendar
Includes 2026–27. We add each new school year after Mt. Diablo Unified School District publishes it.