Black Diamond Middle: The state doesn't publish enough data to score this school fairly.
Black Diamond is a middle school in Antioch. The state doesn't publish enough data to score it fairly — so we won't. Here's what we can show.
No Scope Score available
California doesn't publicly report per-grade test results when fewer than 11 students are tested in a grade — a privacy protection for small schools. We can't compute a Scope Score without that data.
With little published data, a visit does the heavy lifting: ask about class sizes, teacher tenure, and where last year's students went next.
- Ask about typical class sizes and the student-teacher ratio.
- Ask how long teachers have stayed at the school.
- Ask where recent graduates or transfers went next.
- Ask whether the tour can step into a working classroom, and watch how a lesson actually runs.
How every group of students does here
At Black Diamond Middle in Antioch, 19.4% of low-income students met or exceeded the ELA standard in 2025, compared to 24.7% district-wide and 38.2% statewide. Black Diamond Middle trails its district average for low-income students by 5.3 percentage points in ELA. Other subgroups: Low-Income students (7.3% Math proficient); Hispanic students (23.8% ELA proficient). The largest proficiency gap is 21.6 percentage points for english learner students. Data source: California Department of Education, CAASPP 2024-25. 289 students tested.
5 of 16 student groups here are too small to report — a privacy protection, not a gap.
Change in proficiency from the lowest tested grade — which groups gain ground the longer they stay. Groups with fewer than 10 tested students per grade are not shown.
Where the path goes
The path below follows attendance boundaries — scores shown for each next step.
Feeder patterns derived from NCES attendance boundary data. Boundaries are approximate and may have changed — verify with your school district for current assignments.
The road from this school ends at Deer Valley High, which sent 14 graduates to UC campuses last fall and teaches 16 AP subjects. Those numbers describe past cohorts — a child starting here today would reach Deer Valley High around 2031, and 6 years is a long time for a school to hold still, and by the state's 2023 count 64% of Deer Valley High's graduates enrolled in college somewhere, UC or not.
The people teaching here
Pay is set by the district, not the school.
What gets spent here
$528 per student arrives as federal Title funding — a measure of concentrated need, not school quality.
The district's current expense of education per student, from CDE's annual SACS filing — the freshest district spending figure the state publishes.
District-level, from the district's own SACS general-ledger filing — school-by-school breakdowns aren't published by the state.
Source: NCES F-33 · Full district breakdown →
The neighborhood it serves
Source: U.S. Census Bureau, American Community Survey 5-year estimates (2024) · ZIP-level
At 358 students, this school is much smaller than the typical California middle school (≈860).
On the state's science test (CAST), 11% met or exceeded the standard — science is tested in grades 5 and 8 but never enters the Scope Score.
Your other options
Nearby Elementary Schools
3 within ~3 mi · avg 51
Private alternatives nearby
Private schools within ~10 miles. These schools do not participate in state testing and cannot be scored or ranked.
SchoolScope scores and verdicts are our interpretation of public California Department of Education data — independent analysis, not an official rating. How we analyze · Request a correction