Total enrollment
1,734
-164 (-9%) vs SY 2020-21
5 schools in Old Adobe Union
California · 1,734 students · 1 city
Public-school families inside Old Adobe Union pick from 5 schools serving the district's roughly 1,734 K-12 students (5 elementary).
4-year change in Old Adobe Union
SY 2020-21 vs SY 2024-25School count
5
0 (0%) vs SY 2020-21
Source: NCES Common Core of Data, enrollment-weighted demographic averages
How Old Adobe Union ranks
Among districts| Measure | This district | In California | In the US |
|---|---|---|---|
| State test proficiency ranked highest first | 45.2% | #205 of 534 | N/A |
| Enrollment ranked largest first | 1,734 | #451 of 587 | #4,924 of 9,234 |
| Number of schools ranked most first | 5 | #434 of 587 | N/A |
| Students per teacher ranked fewest first | 23.8:1 | #534 of 587 | #8,935 of 9,044 |
| Free or reduced-price lunch share ranked highest first | 38.3% | #446 of 587 | #5,732 of 8,164 |
| Diversity index ranked most diverse first | 59.3% | #204 of 530 | #1,728 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 Old Adobe Union
State test results across the district's 5 scored schools run from Sonoma Mountain Elementary at 71.1% proficient to Miwok Valley Elementary Charter at 20.9%, a gap of 50.3 points. That is the 72nd widest gap among 458 California districts with four or more scored schools.
Since 2017-18, the 5 district schools that reported both years went from 1,929 to 1,734 students (down 10%) and from 80 to 73 full-time teachers (down 9%), 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 |
|---|---|---|---|---|
| Loma Vista Immersion Academy | Petaluma | Elementary | KG-06 | 451 |
| Sonoma Mountain Elementary | Petaluma | Elementary | KG-06 | 422 |
| La Tercera Elementary | Petaluma | Elementary | KG-06 | 295 |
| Miwok Valley Elementary Charter | Petaluma | Elementary | KG-06 | 288 |
| Old Adobe Elementary Charter | Petaluma | Elementary | KG-06 | 278 |
About Old Adobe Union
As a rural-scale district in California, Old Adobe Union teaches 1,734 students across 5 schools.
Average enrollment per school in Old Adobe Union is about 347, meaningfully below the California average of roughly 578.
Over the past 4-year window. Combined enrollment now sits at 1,734 students, shrank 9% from the 1,898 reported in SY 2020-21.
On allk12, the community for Old Adobe Union discusses comparison threads between local schools and program reviews. Anyone with firsthand knowledge of these schools is welcome to weigh in.