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Who is this month's student of the month?

Today: 3/26/17



Purchase your Yearbook from the Treasurer's Office or the MDHS Webstore, $60 with ASB and $70 without.


Food Drive begins Thursday, March 16 and ends on Thursday, March 30. Drop off your canned food donations anytime during school to rooms M2, SL1, AC54, AC51, C10, S10, A8, Shop 3, A14.



T-shirts cost $10 and sweatshirts cost $25. Pay for your purchase at the treasurer's window and bring your receipt to the t-shirt/sweatshirt table in the quad during lunch on Fridays to claim your awesome gear. Merchandise can also be purchased directly from the table in the quad at lunch.




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Liane, Cismowski (925) 682-4030 ex.3400 Principal

Welcome to Mt. Diablo High School!

Greetings, Mt. Diablo High School students, families, friends, and community!


Welcome!  We are so glad you are here!  Everyone on our staff is dedicated to providing an exciting, challenging, and rewarding learning environment for all of our students.  We are continually refining our instructional programs to ensure all of our students are prepared for college, career, and civic responsibility.


There are many ways to participate as parent leaders and volunteers at MDHS.  Watch the website for information regarding WASC meetings, ELAC meetings, Sports Boosters, Mount’s Angels (our parent/teacher/student group), and other general volunteering, for example, Teacher Appreciation Days, and Open House.  


We will be sending bulletins home with student progress reports.  You will also receive regular automated phone calls to inform you of school news, activities, and events.


You are always welcome to contact me with any questions or concerns.  Whoever you are and whatever your interests or talents, we have a place for you. I hope that you will make time this year to come be a part of the family at Mount Diablo High School!  


I am confident we can work together to make 2016 – 2017 our best year yet!

Liane Cismowski, Principal


Mrs. Liane Cismowski

  • School-wide support
  • English Department
  • English Learners

First Semester Bulletin

First Quarter Bulletin

Click below for important information about Mt. Diablo High School:

First Quarter Bulletin.pdf

Primer Trimestre del Año .pdf