publichighGrade 9-12

Mt. Diablo High

2450 Grant St., Concord, CA 94520, United States

+1 (925) 682-4030

http://www.mdusd.org

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Overall Rating

Location

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Mt. Diablo High Overview

About This School

Mt. Diablo High is a public high in Concord, California, serving 1,397 students in grades Grade 9-12. The school maintains a staff of 70 teachers with an average salary of $106,774 and a student-teacher ratio of 19:1. Counseling resources are available to the student body with a ratio of 349 students per counselor. Students at the school are 52% male and 47% female. The demographic breakdown includes 74% Hispanic, 8% Asian, 8% Black, 5% White, and 4% students of two or more races.

1,397

Total Students

Grade 9-12

19:1

Student-Teacher Ratio

70 full-time teachers

Academic Performance

Percentage of students who met or exceeded state standards

English Language Arts0%

Mathematics0%

Science0%

School Information

School Type

public

Grade Levels

Grade 9-12

County

Contra Costa County

Students per Counselor

349:1

Mt. Diablo High Academics & Test Scores

Test Scores

State assessment results showing percentage of students proficient or above

N/A

English Language Arts

N/A

Mathematics

N/A

Science

Class Information

19:1

Student-Teacher Ratio

City Avg: 20.7:1

State Avg: 20.5:1

349

Students per Counselor

Mt. Diablo High Teachers & Staff

Teaching Staff

Total Full-Time Teachers

Average Teacher Salary

$106,774

City Avg: $108,366

State Avg: $106,740

Based on state average salaries for full-time teachers

Support Staff

Student-Teacher Ratio19:1

Students per Counselor349:1

Mt. Diablo High Student Demographics

Student Body

52.47%

Male

47.46%

Female

Total Enrollment: 1,397 students

Racial & Ethnic Diversity

White4.8%

Hispanic73.66%

Asian7.59%

Black8.3%

Two or More Races4.44%

Native American0%

Mt. Diablo High Reviews

Frequently Asked Questions About Mt. Diablo High

Q: What is Mt. Diablo High?

A: Mt. Diablo High is a high public located in Concord.

Q: How many students attend Mt. Diablo High?

A: Mt. Diablo High has approximately 1,397 students enrolled.

Q: What is the student-teacher ratio at Mt. Diablo High?

A: The student-teacher ratio at Mt. Diablo High is 19:1.

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Detailed Information about Mt. Diablo High

Data sourced from NCES, CCD, and state education agencies. Last verified: May 2026. See methodology →

Schoolary Research Team

Verified with NCES & state education agency data

About Mt. Diablo High - Concord, CA

Quick Facts about Mt. Diablo High
School Name	Mt. Diablo High
School Type	public
Grade Levels	Grade 9-12
Location	2450 Grant St., Concord, CA 94520, Concord, CA
County	Contra Costa County
Phone	+1 (925) 682-4030
Total Students	1,397
Student-Teacher Ratio	19:1
Full-Time Teachers	70
Rating	/10
ELA Proficiency	%
Math Proficiency	%
Science Proficiency	%

Frequently Asked Questions about Mt. Diablo High

What is Mt. Diablo High?

Mt. Diablo High is a high public located in Concord.

How many students attend Mt. Diablo High?

Mt. Diablo High has approximately 1,397 students enrolled.

What is the student-teacher ratio at Mt. Diablo High?

The student-teacher ratio at Mt. Diablo High is 19:1.

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