Mount Diablo Unified School District: 2026-27 School Calendar

Every MDUSD school day, holiday, and early-dismissal date for 2026-27 — pulled from the official MDUSD calendar so you don't have to.

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At-a-Glance: Key Dates for the MDUSD 2026-27 School Year

Here are the most important dates for Mount Diablo Unified School District. All dates are from the official MDUSD calendar.

Looking for last year? View the 2025-26 calendar →

July 2026

3 events
No Students

Title I Academy

No Students

New Staff Orientation

No Students

New Staff Orientation

August 2026

4 events
No Students

All Teacher In-Service Day - No Students

No Students

All Teacher In-Service Day - No Students

No Students

All Teacher In-Service Day - No Students

School Start

First Day of School

September 2026

1 event
Holiday - No School

Labor Day - No School

October 2026

7 events
Holiday - No School

Fall Recess Begins

Holiday - No School

Fall Recess

Holiday - No School

Fall Recess

Holiday - No School

Fall Recess

Holiday - No School

Fall Recess

Holiday - No School

Indigenous Peoples Day - No School

School Resume

Students Return from Fall Recess

November 2026

8 events
No Students

Teacher In-Service Day - No Students

Holiday - No School

Veterans Day - No School

Holiday - No School

Thanksgiving Recess Begins

Holiday - No School

Thanksgiving Recess

Holiday - No School

Thanksgiving Recess

Holiday - No School

Thanksgiving Day - No School

Holiday - No School

Thanksgiving Recess

School Resume

Students Return from Thanksgiving Recess

December 2026

2 events
Holiday - No School

Winter Recess Begins

Holiday - No School

Christmas Holiday

January 2027

3 events
Holiday - No School

New Year's Day

School Resume

Students Return from Winter Recess

Holiday - No School

Martin Luther King Jr. Day - No School

February 2027

1 event
Holiday - No School

Presidents Day - No School

March 2027

2 events
No Students

All Teacher In-Service Day - No Students

Holiday - No School

Cesar Chavez Day - No School

April 2027

7 events
Holiday - No School

Spring Recess Begins

Holiday - No School

Spring Recess

Holiday - No School

Spring Recess

Holiday - No School

Spring Recess

Holiday - No School

Board Holiday - No School

Holiday - No School

Spring Recess

School Resume

Students Return from Spring Recess

May 2027

1 event
Holiday - No School

Memorial Day - No School

June 2027

2 events
School End

Last Day of School

Holiday - No School

Juneteenth (Observed) - No School

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Tired of manually tracking the MDUSD calendar? Never miss an early dismissal again.

We know Concord parents are juggling work, traffic, and school schedules. Here's what we hear every school year:

Tuesday 7:45am

"BART delay at Concord station AND teacher workday? Stuck between Highway 4 backup and no childcare!"

Wednesday 2:30pm

"Early release at Bancroft Elementary but I'm in SF for work - scrambling for Walnut Creek pickup!"

Thursday morning

"Is Northgate High closed today? Checking three apps while stuck in Pleasant Hill traffic..."

Friday 3pm

"Conference day at Mt. Diablo Elementary - but which parent can escape the East Bay commute grind?"

The reality: Checking PDFs and the MDUSD website repeatedly is exhausting. There's a better way...

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Complete MDUSD School Coverage

This calendar covers all Mount Diablo Unified School District across all regions. Whether your child attends elementary, middle, or high school, this is the official district-wide calendar that applies to every MDUSD school.

🏫 Concord Core

Elementary Schools:

Bancroft Elementary School
Mt. Diablo Elementary School
Monte Gardens Elementary School
Ayers Elementary School
Silverwood Elementary School
Mountain View Elementary School
Ygnacio Valley Elementary School
Sun Terrace Elementary School
El Monte Elementary School
Rocketship Futuro Academy

Middle Schools:

Pine Hollow Middle School
El Dorado Middle School
Oak Grove Middle School

High Schools:

Concord High School
Ygnacio Valley High School
Mt. Diablo High School

🎓 Pleasant Hill & Walnut Creek

Elementary Schools:

Sequoia Elementary School
Valhalla Elementary School
Strandwood Elementary School
Pleasant Hill Elementary School
Gregory Gardens Elementary School
Fair Oaks Elementary School
Springhill Elementary School
Hidden Valley Elementary School
Highlands Elementary School
Eagle Peak Montessori

Middle Schools:

Pleasant Hill Middle School
Valley View Middle School
M.H. Stanley Middle School

High Schools:

College Park High School
Las Lomas High School
Northgate High School
Acalanes High School
Contra Costa School of the Performing Arts

📚 North County (Clayton & Martinez)

Middle Schools:

Diablo View Middle School
Martinez Junior High School

High Schools:

Clayton Valley Charter High School
Alhambra High School

🌟 Bay Point & Pittsburg Areas

Elementary Schools:

Rio Vista Elementary School
Bel Air Elementary School
Shore Acres Elementary School
Delta View Elementary School
Los Medanos Elementary School
Foothill Elementary School
Marina Vista Elementary School
Willow Cove Elementary School
Stoneman Elementary School
Parkside Elementary School

Middle Schools:

Rancho Medanos Junior High School
Martin Luther King Jr. Junior High School
Hillview Junior High School
Riverview Middle School
Golden Gate Community Charter School

High Schools:

Pittsburg Senior High School
Black Diamond High School
Antioch High School
Deer Valley High School
Freedom High School

One Calendar for All MDUSD Schools

Important: Serving the entire Mount Diablo Unified School District community across Contra Costa County with 30 elementary schools, 10 middle schools, and 5 comprehensive high schools spanning from Concord to Clayton, Pleasant Hill to Bay Point.

📋 Official Data Sources

All calendar data is sourced directly from the official 2026-27 academic calendars published by Mount Diablo Unified School District.

📄 Source Document

📑Official MDUSD 2026-27 Instructional Calendar (PDF)↗
✓Calendar approved by MDUSD School Board
✓Updated when district makes changes
✅

Verified Accuracy

Cross-referenced with official MDUSD publications

🔄

Real-Time Updates

When MDUSD changes dates, we update immediately

📊

Complete Coverage

Every holiday, break, and early dismissal included

Last updated on — sourced from the Official MDUSD 2026-27 Instructional Calendar (PDF).

Other California School Districts Available

Looking for another California school district? We also provide calendar sync services for other major districts across California.

📍

Los Angeles

Los Angeles Unified School District

Auto-updating calendar for LAUSD 2025-26 school year.

View CalendarAlso available: 2026-27
📍

San Diego

San Diego Unified School District

Auto-updating calendar for SDUSD 2026-27 school year.

View Calendar
📍

Walnut Creek

Walnut Creek School District

Auto-updating calendar for WCSD 2025-26 school year.

View CalendarAlso available: 2026-27

Frequently Asked Questions about the 2026-27 MDUSD Calendar

When is the first day of school for MDUSD in 2026?

The first day of school for Mount Diablo Unified School District is Thursday, August 6, 2026.

When is the last day of school for MDUSD 2026-27?

The last day of school for the 2026-27 school year is Wednesday, June 2, 2027.

When is Winter Recess for MDUSD 2026-27?

Winter Recess begins Monday, December 21, 2026. Students return to school on Monday, January 4, 2027.

When is Spring Recess for MDUSD 2026-27?

Spring Recess runs Monday, April 5 through Friday, April 9, 2027, with an additional day off on Monday, April 12. Students return to school on Tuesday, April 13, 2027.

When is Thanksgiving Recess for MDUSD 2026-27?

Thanksgiving Recess runs Monday, November 23 through Friday, November 27, 2026. Students return to school on Monday, November 30, 2026.

When is Fall Recess for MDUSD 2026-27?

Fall Recess runs Monday, October 5 through Friday, October 9, 2026, followed by Indigenous Peoples Day on Monday, October 12. Students return on Tuesday, October 13, 2026.

How many school days are in the MDUSD 2026-27 calendar?

The MDUSD 2026-27 school year has 180 instructional days, divided into Quarter 1 (41 days), Quarter 2 (42 days), Quarter 3 (48 days), and Quarter 4 (49 days).

When are the teacher in-service days for MDUSD 2026-27?

MDUSD has teacher in-service days (no students) on August 3-5, 2026 (before school starts), November 6, 2026, and March 15, 2027.

When is Labor Day for MDUSD 2026-27?

Labor Day is Monday, September 7, 2026. There is no school on this day.

When is Martin Luther King Jr. Day for MDUSD 2026-27?

Martin Luther King Jr. Day is Monday, January 18, 2027. There is no school on this day.

When is Presidents Day for MDUSD 2026-27?

Presidents Day is Monday, February 15, 2027. There is no school on this day.

When is Memorial Day for MDUSD 2026-27?

Memorial Day is Monday, May 31, 2027. There is no school on this day.

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