# Mount Diablo Unified School District: 2026-27 School Calendar Official MDUSD 2026-27 school calendar for Concord, Clayton & Pleasant Hill. Key dates, holidays, breaks & early dismissals for Mt. Diablo USD. > **Full interactive page:** [https://calendars.school/ca-mdusd-concord-school-calendar-2026-27](https://calendars.school/ca-mdusd-concord-school-calendar-2026-27) ## Key Dates | Date | Event | Type | | --- | --- | --- | | July 29, 2026 | Title I Academy | No Students | | July 30, 2026 | New Staff Orientation | No Students | | July 31, 2026 | New Staff Orientation | No Students | | August 3, 2026 | All Teacher In-Service Day - No Students | No Students | | August 4, 2026 | All Teacher In-Service Day - No Students | No Students | | August 5, 2026 | All Teacher In-Service Day - No Students | No Students | | August 6, 2026 | First Day of School | School Start | | September 7, 2026 | Labor Day - No School | Holiday | | October 5, 2026 | Fall Recess Begins | Holiday | | October 6, 2026 | Fall Recess | Holiday | | October 7, 2026 | Fall Recess | Holiday | | October 8, 2026 | Fall Recess | Holiday | | October 9, 2026 | Fall Recess | Holiday | | October 12, 2026 | Indigenous Peoples Day - No School | Holiday | | October 13, 2026 | Students Return from Fall Recess | School Resume | | November 6, 2026 | Teacher In-Service Day - No Students | No Students | | November 11, 2026 | Veterans Day - No School | Holiday | | November 23, 2026 | Thanksgiving Recess Begins | Holiday | | November 24, 2026 | Thanksgiving Recess | Holiday | | November 25, 2026 | Thanksgiving Recess | Holiday | | November 26, 2026 | Thanksgiving Day - No School | Holiday | | November 27, 2026 | Thanksgiving Recess | Holiday | | November 30, 2026 | Students Return from Thanksgiving Recess | School Resume | | December 21, 2026 | Winter Recess Begins | Holiday | | December 25, 2026 | Christmas Holiday | Holiday | | January 1, 2027 | New Year's Day | Holiday | | January 4, 2027 | Students Return from Winter Recess | School Resume | | January 18, 2027 | Martin Luther King Jr. Day - No School | Holiday | | February 15, 2027 | Presidents Day - No School | Holiday | | March 15, 2027 | All Teacher In-Service Day - No Students | No Students | | March 31, 2027 | Cesar Chavez Day - No School | Holiday | | April 5, 2027 | Spring Recess Begins | Holiday | | April 6, 2027 | Spring Recess | Holiday | | April 7, 2027 | Spring Recess | Holiday | | April 8, 2027 | Spring Recess | Holiday | | April 9, 2027 | Board Holiday - No School | Holiday | | April 12, 2027 | Spring Recess | Holiday | | April 13, 2027 | Students Return from Spring Recess | School Resume | | May 31, 2027 | Memorial Day - No School | Holiday | | June 2, 2027 | Last Day of School | School End | | June 18, 2027 | Juneteenth (Observed) - No School | Holiday | ## School Coverage 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. ### 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 ## Frequently Asked Questions ### 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. ## Official Source [Official MDUSD 2026-27 Instructional Calendar (PDF)](https://resources.finalsite.net/images/v1734715381/mdusdorg/zr5pqdhyujbkn5wjofc7/2026-2027schoolyear.pdf) ## Get This Calendar on Your Phone Sync the MDUSD 2026-27 calendar directly to Google Calendar for $undefined. [Purchase on Etsy](https://schoolcalendars.etsy.com/listing/4462643269/2026-27-school-calendar-google-sync) --- *Last updated: 2026-04-03* *Source: [calendars.school](https://calendars.school) — Auto-updating school district calendars synced to your phone.*