Serving 358 students in grades 7-8, Black Diamond Middle 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 34%). The percentage of students achieving proficiency in reading/language arts is 17% (which is lower than the California state average of 47%).
The student-teacher ratio of 21:1 is equal to the California state level of 21:1.
Minority enrollment is 92% of the student body (majority Hispanic and Black), which is higher than the California state average of 80% (majority Hispanic).
Quick Facts (2026)
- Grades: 7-8
- Enrollment: 358 students
- Student-Teacher Ratio: 21:1
- Minority Enrollment: 92%
- Overall Testing Rank: Bottom 50% in CA
- Math Proficiency: 9% (Btm 50%)
- Reading Proficiency: 17% (Btm 50%)
- Science Proficiency: 10-14% (Btm 50%)
- Source: National Center for Education Statistics (NCES), CA Dept. of Education
Top Rankings
Black Diamond Middle School ranks among the top 20% of public schools in California for:
Category
Attribute
Diversity
School Overview
Black Diamond Middle School's student population of 358 students has stayed relatively flat over five school years.
The teacher population of 17 teachers has grown by 13% over five school years.
Grades Offered
Grades 7-8
Total Students
358 students
Total Classroom Teachers
17 teachers
School Rankings
Black Diamond Middle School ranks within the bottom 50% of all 9,523 schools in California (based off of combined math and reading proficiency testing data).
The diversity score of Black Diamond Middle School is 0.70, which is more than the diversity score at state average of 0.63. The school's diversity has stayed relatively flat over five school years.
Overall Testing Rank
#9107 out of 9523 schools
(Bottom 50%)
(Bottom 50%)
Math Test Scores (% Proficient)
9%
34%
Reading/Language Arts Test Scores (% Proficient)
17%
47%
Science Test Scores (% Proficient)
10-14%
29%
Student-Teacher Ratio
21:1
21:1
American Indian
1%
1%
Asian
9%
12%
Hispanic
42%
56%
Black
33%
5%
White
8%
20%
Hawaiian
1%
n/a
Two or more races
6%
6%
All Ethnic Groups
Eligible for Free Lunch
71%
54%
Eligible for Reduced Lunch
10%
8%
School Statewide Testing
School District Name
Source: National Center for Education Statistics (NCES), CA Dept. of Education
Frequently Asked Questions
What is Black Diamond Middle School's ranking?
Black Diamond Middle School is ranked #9107 out of 9,523 schools, which ranks it among the bottom 50% of public schools in California.
What schools are Black Diamond Middle School often compared to?
Black Diamond Middle Schoolis often viewed alongside schools like Adams (J. Douglas) Middle School, Dallas Ranch Middle 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 34% CA state average), while 17% of students have achieved reading proficiency (compared to the 47% CA state average).
How many students attend Black Diamond Middle School?
358 students attend Black Diamond Middle School.
What is the racial composition of the student body?
42% of Black Diamond Middle School students are Hispanic, 33% of students are Black, 9% of students are Asian, 8% of students are White, 6% of students are Two or more races, 1% of students are American Indian, and 1% of students are Hawaiian.
What is the student-teacher ratio of Black Diamond Middle School?
Black Diamond Middle School has a student ration of 21:1, which is equal to the California state average of 21:1.
What grades does Black Diamond Middle School offer ?
Black Diamond Middle School offers enrollment in grades 7-8
What school district is Black Diamond Middle School part of?
Black Diamond Middle School is part of Antioch Unified School District.
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