Mt. Diablo High School
Concord, CA 94520
Phone: (925) 682-4030
Fax: (925) 687-9658
District: Mt. Diablo Unified School District
GreatSchools Rating
public • Grades 9,10,11,12 • 1397 students
Mt. Diablo High School, a public school located in Concord, CA, serves grades 9-12 in the Mt. Diablo Unified School District.It has received a GreatSchools Rating of 3 out of 10, based on a variety of school quality measures.
Mt. Diablo High School is a public school located in Concord, CA. 1397 students attend Mt. Diablo High School.
School Ratings
| Category | Rating | Details |
|---|---|---|
| Test Scores | 4/10 | The Test Score Rating examines how students at this school performed on standardized tests compared with other schools in the state. The Test Rating was created using 2025 California Assessment of Student Performance and Progress (CAASPP) data from California Department of Education, and using 2025 California Science Test data from California Department of Education. |
| College Readiness | 2/10 | The College Readiness Rating uses this high school's graduation rates, college entrance exam participation and performance, or AP, IB, or Dual Enrollment participation to determine how well schools are preparing students for success in college and beyond. The College Readiness Rating was created using 2019 SAT percent college ready data from California Department of Education, using 2019 Average ACT score data from California Department of Education, using 2019 ACT percent college ready data from California Department of Education, using the following data from the 2021 Civil Rights Data Collection: percentage of students enrolled in IB, AP or Dual Enrollment classes in grades 9-12, using 2025 4-year high school graduation rate data from California Department of Education, using 2025 Percent of students who meet UC/CSU entrance requirements data from California Department of Education, and using 2025 demographic data from California Department of Education. |
Worrisome patterns of chronic student absenteeism have been identified.
Posted: August 4, 2026
Posted: August 4, 2026
Posted: August 4, 2026
Posted: August 4, 2026
Posted: August 4, 2026
Posted: August 4, 2026
Posted: August 4, 2026
Posted: August 4, 2026
This is one of the Bay Areas best kept secrets. Its reputation used to be bad but its not that way anymore. The Administration is great, the teachers are great and you can see it in the attitudes of the kids.
Posted: February 23, 2022
I love this school, just came there and Im an freshman. Rgeardless people are going to say this is a bad school. IT IS NOT. They are very welcoming and nice. They have JROCT, cooking, Public speaking or Debate team/class and more. MUptiple luages classes like French, Spanish and Mandorian chinnise. Tons of sports Football, basketball, tenniss and volleyball track too! The techers are pretty nice they tey to help out as much as they can just ask them. The food her is AWSOME. For kids who have food issues they let anyone and everyone get as much as they need/want they should know the limits. Bring your kid here its awsome!!!
Posted: February 23, 2022
Posted: February 23, 2022
Posted: February 23, 2022
Posted: February 23, 2022
Posted: February 23, 2022
Posted: February 23, 2022
Posted: February 23, 2022
Posted: October 7, 2021
Posted: October 7, 2021
Posted: October 7, 2021
Posted: October 7, 2021
Posted: October 7, 2021
Posted: October 7, 2021
Posted: October 7, 2021
Posted: October 7, 2021
This school has potential and could be better than what it is. The school is in Concord but serves the kids of Bay Point which is a far more ethnically diverse area than Concord. As a result of white flight , nearly 80% of the students who reside in concord and are supposed to feed into Mt. Diablo end up going to Clayton Valley or Concord high because the parents think theyre too good to be in classes with brown kids from Bay Point and feel theyll get a better education by attending primarily white schools in areas they could never afford. If you are too good for the community you reside in than you wouldnt be reside there. If the kids that are supposed to go there were required to than the average grades and test scores would go up which means more funding to make improvements.
The teachers here are ok. Lots of unprofessional relations and interactions between students and teachers mainly within the music and arts academies (teachers should not be partying with their students even a year after they graduate)
What this school really lacks is student participation and school spirit. The rallys are boring and nobody is exited to be there and extracurricular activities like dances and other social events put on for students are very few and far between and not well attende.
Posted: July 9, 2021
Posted: July 9, 2021
Posted: July 9, 2021
Posted: July 9, 2021
Posted: July 9, 2021
Posted: July 9, 2021
Posted: July 9, 2021
Posted: July 9, 2021
Really Great school. They have medicine academy, engineering academy, architecture academy, design academy and chef academy. All the students go to the college or university or army.
Posted: September 18, 2014
This school is horrible. I would not recommend sending your child here. There are gangs, drug problems, and other things that are just horrible. The school is so easy, and has no challenge at all. I doubt any colleges would want you if you have a diploma from here.
Posted: December 20, 2012
My daughter was picked on for being a "stupid white girl" at this school. She was an honor student, so not "stupid" and she couldn't very well stop being white! There are a few good teachers, but there are some that are terrible and play favorites. Very little parental involvement. Another review mentioned the leadership program. Well, my daughter was in leadership. It is true the kids there were nicer, but all in all, it was a horrible experience for her. She transferred after two years and was much happier. Many students at this school are racist. It was as bad as we had heard, but we didn't believe it until we found out for ourselves. Transfer if you can to avoid sending your kids this school. Our neighbors had it right. They moved to the Concord High area when their kids were in middle school.
Posted: September 5, 2012
I love Mount Diablo High and although my kids are slated to attend College Park in high school I plan on sending them to MDHS!
Reviews provided by GreatSchools™
| Base | Distance |
|---|---|
| Coast Guard Alameda | 18 mi. |
| Camp Parks Dublin | 19.9 mi. |
| Travis AFB | 20.6 mi. |
| Coast Guard San Francisco | 31 mi. |
| Moffett Field | 39.1 mi. |
| Coast Guard Petaluma | 45.5 mi. |
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