Black Diamond Middle School
Middle school in Antioch, CA · Antioch Unified · Grades 6-8
On the spring 2026 state tests, 21% of Black Diamond Middle School students met or exceeded California's reading (ELA) standard and 8% met the math standard. In reading, that is 6 points below the Antioch Unified average (28%) and 28 points below the California average (49%). Its reading result is higher than 8% of Bay Area middle schools, and it ranks 2nd of 4 public middle schools in Antioch. Reading results in 2026 were about the same as in 2024, and math results were 5 points lower than in 2024.
Test scores, 2024 to 2026
| Subject | Spring 2024 | Spring 2025 | Spring 2026 | Change |
|---|---|---|---|---|
| Reading (ELA) | 22% | 22% | 21% | −1 pt |
| Math | 13% | 8% | 8% | −5 pts |
Compared with nearby averages
| Spring 2026 | Reading (ELA) | Math |
|---|---|---|
| Black Diamond Middle School | 21% | 8% |
| Antioch Unified | 28% | 16% |
| Contra Costa County | 52% | 43% |
| California | 49% | 38% |
Results by grade, spring 2026
| Grade | Reading (ELA) | Math |
|---|---|---|
| 7th grade | 22% | 10% |
| 8th grade | 20% | 7% |
Students are tested in grades 3 to 8 and 11. Each grade is a different group of students, so differences between grades are not a trend.
Homes near Black Diamond Middle School
The typical home value in ZIP code 94531, where Black Diamond Middle School is located, is $658K, down 0.3% over the past year (Zillow Home Value Index). Prices inside the school's attendance zone can differ.
Zillow and Redfin can both search for homes inside a school’s attendance zone and email you new listings. Search for the school by name on either site and save the search.
Nearby middle schools
| Distance | School | Reading (ELA) | Math | Typical home value (ZIP) |
|---|---|---|---|---|
| 1.8 mi | Dallas Ranch MiddleAntioch · Grades 6-8 | 31% | 14% | $658K |
| 3.0 mi | Park MiddleAntioch · Grades 6-8 | 20% | 12% | $536K |
| 3.1 mi | O'Hara Park MiddleOakley · Grades 6-8 | 36% | 15% | $654K |
| 3.4 mi | Antioch MiddleAntioch · Grades 6-8 | 12% | 6% | $536K |
| 3.6 mi | J. Douglas Adams MiddleBrentwood · Grades 6-8 | 69% | 55% | $782K |
| 3.6 mi | William B. Bristow MiddleBrentwood · Grades 6-8 | 51% | 34% | $782K |
School details
- Address
- 4730 Sterling Hill Drive, Antioch, CA 94531
Get directions · See it on our map - Phone
- (925) 779-7460
- District
- Antioch Unified
- County
- Contra Costa County
- Grades
- 6-8
- Students
- 362 (2025-26)
- Type
- Middle school · Traditional
- Opened
- 1995
- State school code
- 07616486113104
Common questions
How did Black Diamond Middle School do on state tests?
In spring 2026, 21% of students met or exceeded the reading (ELA) standard and 8% met the math standard, compared with 49% and 38% across California.
How many students attend Black Diamond Middle School?
362 students were enrolled in the 2025-26 school year, in grades 6-8.
How much do homes cost near Black Diamond Middle School?
The typical home value in ZIP code 94531, where Black Diamond Middle School is located, is $658K, down 0.3% over the past year (Zillow Home Value Index). Prices inside the school's attendance zone can differ.
Does living near Black Diamond Middle School guarantee a spot?
No. Public schools assign students by attendance zone, which Antioch Unified sets and can change. Confirm the zone for a specific address with the district before you buy or rent.