English Language Arts
21.6%
State avg 49.1%
District avg 27.1%
County avg 52.7%
-0.4pp since 2014-15
District avg 27.1%
County avg 52.7%
-0.4pp since 2014-15
Test scores
See how it ranks: all California schools by score · Contra Costa County schools by score
CAASPP Smarter Balanced, SY 2024-25
All grades, all students. % met or exceeded standard.Math
8.0%
State avg 37.7%
District avg 14.3%
County avg 43.1%
-5.0pp since 2014-15
District avg 14.3%
County avg 43.1%
-5.0pp since 2014-15
What this means: On the CAASPP Smarter Balanced, California's statewide test, about 22 of every 100 students at this school read and write at grade level and about 8 of 100 do math at grade level. Across all California schools, those numbers are about 49 and 38. Reading and writing scores have held steady since 2014, while math scores are down about 5 points.
Rank: Black Diamond Middle places #1,124 of 1,224 California middle schools, and #32 of 39 in Contra Costa County for state test proficiency.
BeatsExpectations
Demographically-adjusted score · methodologyTier
UNDERPERFORMING
Bottom 10% of CA schools after controlling for student poverty
Actual proficiency
16.2%
composite math + reading, all grades
Predicted
32.1%
based on CA schools with similar FRL share
Beats by
-15.9pp
below demographic expectation
What this means: About 16% of students here test proficient in math and reading, below the roughly 32% typical for California schools with a similar share of low-income students. BeatsExpectations compares each school with others at the same poverty level, not by raw scores, so a school lands here when its results trail those comparable schools, which is not the same as having low scores. A higher-scoring school can still fall in this tier if similar schools score higher still.
BeatsExpectations runs a per-state regression of proficiency on free/reduced-lunch share, then scores each school by residual. How this is calculated →
By grade, SY 2024-25
School score vs state average per tested grade.| Grade | English Language Arts | Math | ||||
|---|---|---|---|---|---|---|
| School | State | n tested | School | State | n tested | |
| Grade 7 | 19.8% | 49.9% | 177 | 8.4% | 36.4% | 178 |
| Grade 8 | 23.4% | 48.0% | 171 | 7.6% | 34.3% | 171 |
Performance levels, SY 2024-25
Share of tested students at each CAASPP Smarter Balanced level.English Language Arts
| Grade | Standard Exceeded | Standard Met | Standard Nearly Met | Standard Not Met |
|---|---|---|---|---|
| All grades | 4.3% | 17.2% | 22.4% | 56.0% |
| Grade 7 | 5.7% | 14.1% | 18.6% | 61.6% |
| Grade 8 | 2.9% | 20.5% | 26.3% | 50.3% |
Math
| Grade | Standard Exceeded | Standard Met | Standard Nearly Met | Standard Not Met |
|---|---|---|---|---|
| All grades | 3.7% | 4.3% | 17.5% | 74.5% |
| Grade 7 | 4.5% | 3.9% | 20.8% | 70.8% |
| Grade 8 | 2.9% | 4.7% | 14.0% | 78.4% |
Each tested student counts in exactly one level, so each row adds to about 100%. The headline met or exceeded standard rate is the sum of the top two levels.
10-year history
All grades, all students. Black Diamond California avgEnglish Language Arts
| Year | School | District | County | State |
|---|---|---|---|---|
| SY 2024-25 | 21.6% | 27.1% | 52.7% | 49.1% |
| SY 2023-24 | 22.2% | 25.0% | 51.0% | 47.1% |
| SY 2022-23 | 20.1% | 26.4% | 51.2% | 46.7% |
| SY 2021-22 | 18.0% | 26.1% | 51.8% | 47.1% |
| SY 2020-21 | N/A | 55.0% | 52.7% | 49.0% |
| SY 2018-19 | 17.5% | 29.6% | 55.0% | 51.1% |
| SY 2017-18 | 18.8% | 31.2% | 54.8% | 49.9% |
| SY 2016-17 | 20.3% | 31.6% | 54.7% | 48.6% |
| SY 2015-16 | 20.0% | 33.8% | 55.1% | 48.1% |
| SY 2014-15 | 22.0% | 30.6% | 51.9% | 44.0% |
Math
| Year | School | District | County | State |
|---|---|---|---|---|
| SY 2024-25 | 8.0% | 14.3% | 43.1% | 37.7% |
| SY 2023-24 | 13.1% | 14.0% | 41.6% | 35.6% |
| SY 2022-23 | 9.2% | 13.7% | 41.0% | 34.6% |
| SY 2021-22 | 7.9% | 13.0% | 40.2% | 33.4% |
| SY 2020-21 | N/A | 29.4% | 44.2% | 33.7% |
| SY 2018-19 | 6.5% | 16.9% | 45.1% | 39.8% |
| SY 2017-18 | 12.8% | 18.3% | 44.8% | 38.7% |
| SY 2016-17 | 8.8% | 19.8% | 45.0% | 37.6% |
| SY 2015-16 | 12.0% | 19.5% | 45.1% | 36.7% |
| SY 2014-15 | 13.0% | 18.8% | 42.6% | 33.6% |
How to read these scores
What is CAASPP Smarter Balanced?
CAASPP (the California Assessment of Student Performance and Progress) is California's annual statewide test. Public-school students in grades 3 through 8 and grade 11 take the Smarter Balanced Summative Assessments in English Language Arts and Math each spring.
What does "% met or exceeded standard" mean?
It is the percentage of students at the school whose scores were rated "Standard Met" or "Standard Exceeded" on the test. Those are the top two of four performance levels, and they signal the student is performing at grade level or above. A higher number is better.
What does 21.6% mean for English Language Arts at Black Diamond Middle?
It means about 21.6 percent of students tested at Black Diamond Middle performed at grade level or above on the CAASPP Smarter Balanced English Language Arts test in 2024-25. The statewide average for California that year was 49.1%. The other students fell into the lower performance levels.
How is the state average calculated?
It is a weighted average, not a simple average of each school's number. We multiply each public school's score by how many of its students tested, add those together for all schools in California, and divide by the total students tested that year. This way a big school with 1,500 students counts more than a small school with 50 students, which is the right way to ask "how did the typical student do this year?". District and county averages on this page use the same method, just scoped to that district or county.
Where does this data come from?
California Department of Education, CAASPP Smarter Balanced Summative Assessment. School-level "All Students" subgroup. Scores suppressed for groups under 11 students.
How often is it updated?
CAASPP Smarter Balanced is administered once a year (spring). Results are released by the state in the summer or early fall. We refresh this page after each annual release.