Total enrollment
9,932
+969 (+11%) vs SY 2020-21
12 schools in Brentwood Union
California · 9,932 students · 1 city
Of the 12 public K-12 schools run by Brentwood Union, combined student count is roughly 9,932, with 9 elementary and 3 middle.
4-year change in Brentwood Union
SY 2020-21 vs SY 2024-25School count
12
+1 (+9%) vs SY 2020-21
Source: NCES Common Core of Data, enrollment-weighted demographic averages
How Brentwood Union ranks
Among districts| Measure | This district | In California | In the US |
|---|---|---|---|
| Enrollment ranked largest first | 9,932 | #147 of 587 | #923 of 9,234 |
| Number of schools ranked most first | 12 | #187 of 587 | N/A |
| Students per teacher ranked fewest first | 24.3:1 | #553 of 587 | #8,959 of 9,044 |
| Free or reduced-price lunch share ranked highest first | 44.4% | #414 of 587 | #4,978 of 8,164 |
| Diversity index ranked most diverse first | 76.0% | #4 of 530 | #37 of 6,853 |
Districts need at least 2 schools and 500 students to be ranked. Test proficiency is ranked within the state only, since each state gives a different test. Each rank links to the full list.
Inside Brentwood Union
State test results across the district's 5 scored schools run from ISAAC R. MONTANEZ ELEMENTARY at 56.1% proficient to Mary Casey Black Elementary at 39.8%, a gap of 16.4 points. That is the 362nd widest gap among 458 California districts with four or more scored schools.
Since 2017-18, the 11 district schools that reported both years went from 9,027 to 9,488 students (up 5%) and from 362 to 390 full-time teachers (up 8%), as of 2024-25.
Proficient is the average share of students meeting the state standard across each school's state tests in 2023-24 and 2024-25; schools with fewer than 100 students and schools serving specialized populations are left out. Staffing figures come from the NCES Common Core of Data and count only schools that reported students and teachers in both years.
| Name | City | Level | Grades | Enrollment |
|---|---|---|---|---|
| William B. Bristow Middle | Brentwood | Middle | 06-08 | 1,223 |
| Adams (J. Douglas) Middle | Brentwood | Middle | 06-08 | 1,197 |
| Edna Hill Middle | Brentwood | Middle | 06-08 | 1,047 |
| R. Paul Krey Elementary | Brentwood | Elementary | KG-05 | 885 |
| Pioneer Elementary | Brentwood | Elementary | KG-05 | 859 |
| Brentwood Elementary | Brentwood | Elementary | KG-05 | 811 |
| Garin Elementary | Brentwood | Elementary | KG-05 | 785 |
| Loma Vista Elementary | Brentwood | Elementary | KG-05 | 749 |
| Ron Nunn Elementary | Brentwood | Elementary | KG-05 | 702 |
| Mary Casey Black Elementary | Brentwood | Elementary | KG-05 | 680 |
| Marsh Creek Elementary | Brentwood | Elementary | KG-05 | 550 |
| ISAAC R. MONTANEZ ELEMENTARY | Brentwood | Elementary | KG-05 | 444 |
About Brentwood Union
As a compact district in California, Brentwood Union instructs 9,932 students across 12 schools.
On the school-mix side, Brentwood Union is built around 9 elementary and 3 middle.
Per-school enrollment averages around 828 in this district, above the California typical of 578.
Looking at the last 4 years. Across the same 4-year window, public-school enrollment increased 11%: 8,963 students in SY 2020-21 versus 9,932 in SY 2024-25. Brentwood Union now counts 12 public schools, up from 11 in SY 2020-21.
On this page, the community for Brentwood Union discusses sports rivalries, cross-district programs, and shared facilities. Members of the local community share what they see day-to-day.