Needs Improvement
#8748 of 9,539 schools in CA
Black Diamond Middle
Middle School · Antioch Unified · Antioch, CA
An Antioch Unified middle school where students score 16 points below what's typical for similar communities.
4730 Sterling Hill Dr., Antioch, CA 94531
- Math 13% vs CA 34% (2024)
- Reading 22% vs CA 47% (2024)
- 19.1:1 student-teacher ratio
Academics
Full Profile · 3/3 metricsView breakdown
View breakdown
View breakdown
Students at Black Diamond Middle score 18% proficient, which is below what's typical for similar communities (expected: 34%).
2024 CAASPP proficiency
Most recent published year. School vs. CA average.
Trend
→ SteadyProficiency is down 25 points across the 16-year record (2009–2024) and has held near 18% recently.
Show all 13 years
Multi-year averages used by the rating model: math 22% (multi-year average, 2009-2024) · reading/ELA 31% (multi-year average, 2009-2024)
Based on 30 test records from CA state assessments and EdFacts (NCES).
Equity & diversity
Shown separately, not included in the overall scoreFree/reduced lunch
72%
Students qualifying for federal meal assistance
How we rate schools
A clear 1–10 score built from public data — growth, academics, and learning environment. No hidden criteria, no pay-to-play.
See how we rateThe neighborhood
Where Black Diamond Middle sits, and what the surrounding area looks like.
Nearby same-level schools are colored by their score. Pins are locations, not attendance boundaries. Open the San Francisco Bay Area map →
Getting around & local context
- Walk 34Car-Dependent
- Transit 28Some Transit
- Bike 56Bikeable
- City Safety: High3,815/100K
Powered by
FBI Uniform Crime Reporting · 2024 · city context (Antioch), not school-level safety or attendance eligibility. Source details
Source period: 2024. Freshness not available.
Area profileU.S. Census ACS 5-year estimates (ACS 2019–2023 5-year estimates)
Median income
$123,428
Median home value
$660,200
Median rent
$3,063/mo
College educated
31.6%
Homeownership
72.3%
Poverty rate
7.2%
ACS 2019–2023 5-year estimates for the ZCTA associated with school ZIP 94531; this is area context, not an attendance boundary.
Programs & students
Programs & Offerings
Compare nearby
Nearby same-level schools
4 from a 5-mile search; district fallback available
| School | Score | Grades | Distance | Enrollment | Compare |
|---|---|---|---|---|---|
| Heritage Baptist AcademyPrivate · tuition | 7.2private | K–12 | 1.3 mi | 93 | Compare → |
| Dallas Ranch MiddleEnrollment path unverified | 3.5 | 6–8 | 1.7 mi | 752 | Compare → |
| Spectrum Center- Antioch CampusPrivate · tuition | 6.0private | K–12 | 2.5 mi | 56 | Compare → |
| Cornerstone Christian SchoolPrivate · tuition | 7.1private | PK–12 | 2.6 mi | 501 | Compare → |
Distance is proximity only; it is not attendance eligibility.
Private · tuition: Potential private option; tuition and admission requirements have not been verified.
Enrollment path unverified: Potential public school; its attendance or application path has not been classified.
Public and private scores come from different models and are shown side by side, not blended into one ranking.
Antioch Unified
- Schools in district
- 25
- Rank in district
- #15 of 25
- District spending per student
- $17,933NCES F-33 · FY 2023 · This annual source is three years behind the current year.
- District child poverty rate
- 15.8%Census SAIPE · 2024
Black Diamond Middle is listed in Antioch Unified; a district label does not verify attendance for an address.
About Black Diamond Middle
Black Diamond Middle is a public middle school in Antioch, CA, part of Antioch Unified, serving approximately 343 students in grades 7th-8th with a 19.1:1 student-teacher ratio. It holds a MySchoolScout rating of 3.8 out of 10 and ranks #8,748 of 9,539 schools in CA. State assessment records show 22% math proficiency (multi-year average, 2009-2024) and 31% reading/ELA proficiency (multi-year average, 2009-2024).
Frequently asked questions
Common questions about Black Diamond Middle
What grades does Black Diamond Middle serve?
Black Diamond Middle serves students in grades 7th through 8th.
How many students attend Black Diamond Middle?
Black Diamond Middle has an enrollment of approximately 343 students.
What is the student-teacher ratio at Black Diamond Middle?
The student-teacher ratio at Black Diamond Middle is 19.1:1. A lower ratio generally means more individual attention per student. The national average is approximately 16:1 for public schools.
How does Black Diamond Middle rank in CA?
Black Diamond Middle ranks #8,748 of 9,539 schools in CA.
What is Black Diamond Middle's MySchoolScout rating?
Black Diamond Middle has a current MySchoolScout rating of 3.8 out of 10. This score combines the level-appropriate components shown in the rating breakdown; equity data is shown separately for context.
What are the test scores at Black Diamond Middle?
Based on loaded state assessment records, Black Diamond Middle has 22% math proficiency (multi-year average, 2009-2024) and 31% reading/ELA proficiency (multi-year average, 2009-2024).
Is Black Diamond Middle a charter school?
No, Black Diamond Middle is not a charter school. It is a traditional public school operated by the local school district.
Is Black Diamond Middle a Title I school?
No, Black Diamond Middle is not currently a Title I school.
What does the Free & Reduced Lunch percentage mean for Black Diamond Middle?
72.0% of students at Black Diamond Middle qualify for free or reduced-price lunch. This is a commonly used indicator of economic need and provides important context when interpreting test scores.
School factsNCES Common Core of Data (CCD) (SY 2023–24)
- Grades
- 7th – 8th
- Enrollment
- 343
- Student-Teacher Ratio
- 19.1:1
- Teachers (FTE)
- 18
- Type
- regular
- Setting
- Large Suburb
- County
- Contra Costa County
- Chronic Absenteeism (SY 2022-23)
- 40.8%
- Phone
- (925) 779-7460
- Area population (ZIP 94531)
- 44,746
- Area average commute
- 46.5 min
- Area median age
- 38.9
About this school's data
Every number on this page comes from a published source with a stated period. Where a source is partial, aging, or describes a surrounding area rather than the school, that limitation is named below.
- School directory (enrollment, grades, staff, contact)
- NCES Common Core of Data (CCD) · SY 2023–24 · Medium confidence
- Source period: SY 2023–24. A newer release may be available.
- MySchoolScout rating and rank
- MySchoolScout ranking model · Low confidence
- Vintage not available. Do not use this measure alone.
- Derived as a weighted blend of the component scores shown in Academics from state assessment, EdFacts growth, and NCES resource records.
- Math proficiency
- State department of education · 2024 CAASPP · Medium confidence
- Available for part of the eligible units; results may not represent the full area.
- Source period: 2024 CAASPP. A newer release may be available.
- Derived from source records rather than read directly from one field.
- Reading/ELA proficiency
- State department of education · 2024 CAASPP · Medium confidence
- Available for part of the eligible units; results may not represent the full area.
- Source period: 2024 CAASPP. A newer release may be available.
- Derived from source records rather than read directly from one field.
- Student progress (growth)
- NCES EdFacts · Mixed source periods · Low confidence
- Vintage not available. Do not use this measure alone.
- Available for part of the eligible units; results may not represent the full area.
- Derived as the fitted year-over-year slope of proficiency from multi-year assessment records.
- Neighborhood (income, housing, education)
- U.S. Census ACS 5-year estimates · ACS 2019–2023 5-year estimates · Low confidence
- Older source: ACS 2019–2023 5-year estimates. Use as historical context.
- Reported for the ZCTA for ZIP 94531; this does not measure the attendance area.
- Programs (AP/IB, athletics, gifted)
- CRDC via Urban Institute · SY 2021–22 · Medium confidence
- Available for part of the eligible units; results may not represent the full area.
- Source period: SY 2021–22. A newer release may be available.
Evidence periods: Rating mixed/unknown input periods; assessments multi-year average, 2009-2024; directory SY 2023–24
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