Serving 1,477 students in grades 9-12, Mt. Diablo High School ranks in the bottom 50% of all schools in California for overall test scores (math proficiency is bottom 50%, and reading proficiency is bottom 50%).
The percentage of students achieving proficiency in math is 9% (which is lower than the California state average of 33%). The percentage of students achieving proficiency in reading/language arts is 27% (which is lower than the California state average of 47%).
The student:teacher ratio of 20:1 is lower than the California state level of 21:1.
Minority enrollment is 96% of the student body (majority Hispanic), which is higher than the California state average of 80% (majority Hispanic).
Quick Stats (2025)
Grades: 9-12
Enrollment: 1,477 students
Student:Teacher Ratio: 20:1
Minority Enrollment: 96%
Graduation Rate
: 84% (Btm 50% in CA)
Overall Testing Rank
: Bottom 50%
Math Proficiency
: 9% (Btm 50%)
Reading Proficiency
: 27% (Btm 50%)
Science Proficiency
: 14% (Btm 50%)
Source: National Center for Education Statistics (NCES), CA Dept. of Education
Mt. Diablo High School ranks within the bottom 50% of all 9,602 schools in California (based off of combined math and reading proficiency testing data).
The diversity score of Mt. Diablo High School is 0.44, which is less than the diversity score at state average of 0.63. The school's diversity has stayed relatively flat over five school years.
Mt. Diablo High School is ranked #8418 out of 9,602 schools, which ranks it among the bottom 50% of public schools in California.
What schools are Mt. Diablo High School often compared to?
Mt. Diablo High Schoolis often viewed alongside schools like Concord High School by visitors of our site.
What percent of students have achieved state testing proficiency in math and reading?
9% of students have achieved math proficiency (compared to the 33% CA state average), while 27% of students have achieved reading proficiency (compared to the 47% CA state average).
What is the graduation rate of Mt. Diablo High School?
The graduation rate of Mt. Diablo High School is 84%, which is lower than the California state average of 87%.
How many students attend Mt. Diablo High School?
1,477 students attend Mt. Diablo High School.
What is the racial composition of the student body?
74% of Mt. Diablo High School students are Hispanic, 8% of students are Asian, 8% of students are Black, 4% of students are White, 4% of students are Two or more races, and 2% of students are Hawaiian.
What is the student:teacher ratio of Mt. Diablo High School?
Mt. Diablo High School has a student ration of 20:1, which is lower than the California state average of 21:1.
What grades does Mt. Diablo High School offer ?
Mt. Diablo High School offers enrollment in grades 9-12
What school district is Mt. Diablo High School part of?
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Quick Stats (2025)
Grades: 9-12
Enrollment: 1,477 students
Student:Teacher Ratio: 20:1
Minority Enrollment: 96%
Graduation Rate
: 84% (Btm 50%)
Overall Testing Rank
: Bottom 50%
Math Proficiency
: 9% (Btm 50%)
Reading Proficiency
: 27% (Btm 50%)
Science Proficiency
: 14% (Btm 50%)
Source: National Center for Education Statistics (NCES), CA Dept. of Education
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