Skip to main content

Mt Diablo High School

Dear Mt. Diablo Unified School District Families:


All schools in Mt. Diablo Unified will be closed tomorrow, Friday, November 16, 2018, due to air quality conditions. The forecasted air quality for tomorrow is projected to be at a more hazardous level; we also are concerned with the cumulative effect of poor air quality.  


We thank you and your families for your patience during what has been a very difficult time for our Northern California communities, and wish you a restful Thanksgiving. 


Mt. Diablo Unified School District



Queridas familias del Distrito Unificado Escolar de Mt. Diablo:


Todas las escuelas en el distrito unificado de Mt. Diablo estarán cerradas mañana, 16 de noviembre de 2018, dadas las condiciones de la calidad del aire. El pronóstico para mañana es a un nivel más peligroso, y estamos preocupados por los efectos de la mala calidad del aire.


Les agradecemos a usted y a sus familias por su paciencia en estos tiempos difíciles de nuestras comunidades del Norte de California, y les deseamos un feliz Día de Acción de Gracias.


Distrito Unificado Escolar de Mt. Diablo 




PBIS Volleyball Game Posted 11/13/18
Study Hall Posted 11/6/18

Questions about this site?

We always love feedback and we occasionally make mistakes. Let us know. 

Email our Leadership Advisor any time:

School Closed 11/16/18

Mt. Diablo High School will be closed, Friday, November 16, 2018, due to air quality conditions. The forecasted air quality is projected to be at a hazardous level; we also are concerned with the cumulative effect of poor air quality. 

School Calendar

Food drive

Nov. 8 - Nov. 27 

Donate your canned goods to help gather food for the needy

Food Barrel Locations: 

Ananos- M2 Maganito- SL1
Ennis- AC53 McClain- P.E Office 
Fisher- C8  Reyes- A15
Heller- S5 Smith- SH4
Kratter- SH3 Tessandori- S10
King- C9 Wille- AC61
Wilkinson- AC62  

Senior Grad Orders

Class of 2019 graduation order time has arrived. Representatives from Academic Affairs will be on campus Tuesday, November 27 at lunch in Romaine Hall to take orders and answer any questions. Items on sale will include:

  • Caps and Gowns
  • Class Rings
  • Graduation Announcements
  • c/o 2019 Wearables

Save money and order early! 

Online ordering is, also, available at

MDHS Spirit Gear 

NEW MDHS Maroon Hoodies have arrived. Supplies are limited. 

$25.00 w/ASB, $30.00 w/out

Purchase at Treasurer's Window, Pick Up in M2. 

Before school, Brunch, and Lunch, only.

Senior Portraits

Senior Portrait retakes are on November 26-27

Schedule is TBA

All questions about payments and schedule should be sent to

Intradistrict Transfers

Applications are available online from October 15 , 2018 - November 15, 2018. 

No paper applications.

Follow this link

and then click on 'Transfers'.

Click below for more information:

Intradistrict Transfer doc.pdf (PDF)

For information about unassigned areas, please click below:

Intradistrict Unassigned Area .pdf (PDF)

Student Absences

Students, don't get the label of "Truant". 


If you are absent, make sure your parents call the school and clear your absences! Have them call

925-682-4030 ext. 3445.

Office Hours

Regular Office Hours

7:30 am - 4:00 pm

Support Staff

Are you updated on our sports?

Library hours

The Library will be available on Thursdays and Fridays from 7:45 a.m. to 3:30 p.m. Come prepared with a student ID to check out a maximum of 3 books. Become lost in worlds that you can only discover by reading a book!