School Overview
Mt. Diablo High School, located in Concord, California, is a historic cornerstone of the Mt. Diablo Unified School District. Established in 1901, it is the oldest high school in the district and maintains a deep-rooted tradition of community involvement and school spirit. The campus serves a diverse student population and is well-known for its comprehensive academic curriculum, which includes a variety of Advanced Placement (AP) courses, English Language Learner programs, and dedicated support services designed to help students from all backgrounds succeed.

Beyond traditional academics, Mt. Diablo High is particularly recognized for its robust Career Technical Education (CTE) pathways, which provide students with hands-on training in fields such as engineering, culinary arts, and digital media. The school emphasizes a "Red Devil" culture of pride and inclusivity, offering a wide array of extracurricular activities, including competitive athletics, performing arts, and various student-led clubs. By balancing rigorous college-preparatory coursework with practical vocational preparation, Mt. Diablo High aims to equip its graduates with the necessary tools for both higher education and the modern workforce.
1,498
Total Students
79.2
Full-Time Teachers
18.9
Student/Teacher Ratio
74.6%
Free/Reduced Lunch
Student Demographics

Student Demographics Data Table

Student Demographics for Mt. Diablo High
Demographic Student Count
White55
Hispanic1,122
Black102
Asian125
Two or More76
Pacific Islander17
  • Hispanic
    1,122 (74.9 %)
  • Asian
    125 (8.4 %)
  • Black
    102 (6.8 %)
  • Two or More
    76 (5.1 %)
  • White
    55 (3.7 %)
  • Pacific Islander
    17 (1.1 %)
School Location
School Details
Status: Open
School Level: High School
School Type: Regular School
Charter Status:* Public Non-Charter
Virtual Instruction: Supplemental Virtual
Shared Time Status: N/A
District: Mt. Diablo Unified
Phone: (925)682-4030
Website: http://www.mdusd.org
Grade Range: 9th - 12th
Total Students: 1,498
Full-Time Teachers (FTE): 79.2
Pupil/Teacher Ratio: 18.9
NSLP Participation:1 Yes under Community Eligibility Option (CEO)
Qualified Free Lunch: 974
Qualified Reduced Lunch: 144
Grades Taught
Grade 9 332
Grade 10 365
Grade 11 434
Grade 12 367

Grades Taught Data Table

Grades Taught and Student Counts for Mt. Diablo High
Grade Student Count
Grade 9332
Grade 10365
Grade 11434
Grade 12367
Gender Ratio

Student Gender Ratio Data Table

Student Gender Ratio for Mt. Diablo High
Gender Student Count Percentage
Female67244.9%
Male82555.1%
Not Specified10%
Nearby High Schools (Within 10 Miles)