Old Adobe Union School District
School District · Petaluma, California
Avg Rating
6.4
out of 10
Schools
5
5 elem
Per-Pupil Spending
$16,683
Student-Teacher Ratio
22.6:1
Avg Rating
6.4
out of 10
Schools
5
5 elem
Per-Pupil Spending
$16,683
Student-Teacher Ratio
22.6:1
Evaluating Old Adobe Union?
A district shares budget, policy, and attendance zones across its schools — use this page to judge Old Adobe Union as a whole, then compare how its individual schools differ.
Shortlist starter
Start with these real page-level signals, then use the full table and map below.
Sonoma Mountain Elementary
Petaluma · Elementary. Compare this profile against district averages, level fit, and attendance-zone reality below.
Loma Vista Immersion Academy
Petaluma · Elementary. Compare this profile against district averages, level fit, and attendance-zone reality below.
La Tercera Elementary
Petaluma · Elementary. Compare this profile against district averages, level fit, and attendance-zone reality below.
How this district compares
California rank
#302 of 713
districts by avg. composite
Vs. state average
+0.2
above California avg
Per-pupil spending
$16,683
$964 vs California median
District size
1,830 students
Smaller than California median
The short answer
Old Adobe Union ranks #302 of 713 California districts by overall school rating. Old Adobe Union's schools with real test data average 6.4/10 across 5 schools. Its top-rated schools are Sonoma Mountain Elementary (7.7/10), Loma Vista Immersion Academy (7.5/10), and La Tercera Elementary (6.4/10). Schools with estimated (proxy) scores are excluded from this ranking.
STAAR proficiency rose +6.2 points from 2022 to 2024. That's the biggest jump among Old Adobe Union schools across the two most recent comparable testing years.
Top-Rated Schools in Old Adobe Union
Ranked by MySchoolScout composite rating using only schools with real test data (5 of 5). "Value" = points above what student poverty predicts. Estimated (proxy) scores are excluded.
| # | School | Rating |
|---|---|---|
| 1 | Sonoma Mountain Elementary | 7.7 / 10 |
| 2 | Loma Vista Immersion Academy | 7.5 / 10 |
| 3 | La Tercera Elementary | 6.4 / 10 |
| 4 | Old Adobe Elementary Charter | 6.3 / 10 |
| 5 | Miwok Valley Elementary Charter | 4.3 / 10 |
See all 5 schools — including those with estimated data — in the full directory below. How we rate schools.
About Old Adobe Union
Old Adobe Union is a Petaluma, California school district serving 5 schools. The district educates 1,830 students with a student-teacher ratio of 22.6:1. The district invests $16,683 per student annually.
With an average rating of 6.4/10, Old Adobe Union demonstrates solid academic performance.
The highest-rated school in the district is Sonoma Mountain Elementary, which has a composite score of 7.7/10.
In standardized testing, Old Adobe Union students show an average math proficiency of 44.3% and ELA proficiency of 49.5%.
The district includes 5 elementary schools .
District Map
Schools in Old Adobe Union, colored by MySchoolScout rank. Click a pin for details.
District Average Test Scores
Average proficiency across all schools in Old Adobe Union with test data.
Schools in Old Adobe Union
5 schoolsDistrict Details
- State
- California
- City
- Petaluma
- Total Enrollment
- 1,830
- Teachers (FTE)
- 81
- Child Poverty Rate
- 0.1%
- Data Year
- 2023
Frequently Asked Questions
How many schools are in Old Adobe Union?
Old Adobe Union has 5 schools in total — 5 elementary. You can explore each school's ratings and details on this page.
What is the average rating for Old Adobe Union?
The average composite rating for Old Adobe Union is 6.4/10. This score is calculated from the individual ratings of all schools with academic data in the district.
What is the per-pupil spending in Old Adobe Union?
Old Adobe Union spends $16,683 per student per year.
What is the student-teacher ratio in Old Adobe Union?
The average student-teacher ratio in Old Adobe Union is 22.6:1.
What is the top-rated school in Old Adobe Union?
Sonoma Mountain Elementary is the highest-rated school in Old Adobe Union with a composite score of 7.7/10.
What are the test scores in Old Adobe Union?
Across schools in Old Adobe Union with test data, the average math proficiency is 44.3% and the average ELA (reading/writing) proficiency is 49.5%. These figures represent the percentage of students meeting or exceeding grade-level standards.
How does Old Adobe Union compare to other districts in California?
Old Adobe Union has an average school rating of 6.4/10 across 5 schools. Families can compare this to other districts in California by visiting individual district pages. Factors like school size, available programs, and community demographics also play a role in choosing the right fit.
How does MySchoolScout rate schools?
MySchoolScout ratings blend student growth, poverty-adjusted academic performance, and learning environment — plus college readiness for high schools. Weights vary by school level, and equity data is shown for context without being factored into the score. Learn more about our rating system on our methodology page.
District Averages
- Overall Rating
- 6.4/10
- Math Proficiency
- 44.3%
- ELA Proficiency
- 49.5%
Resources
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 rateOther School Districts in CA
Compare Old Adobe Union with neighboring districts in the state.
- Los Angeles Unified (785)
- San Diego Unified (175)
- San Francisco Unified (113)
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- Long Beach Unified (82)
- Oakland Unified (82)
- San Bernardino City Unified (76)
- Sacramento City Unified (73)
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- Elk Grove Unified (67)
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- Clovis Unified (50)
- Lodi Unified (49)
- Riverside Unified (49)
- Bakersfield City (45)
- Irvine Unified (45)
- Fontana Unified (44)
- Fremont Unified (44)
Data from NCES Common Core of Data, California Dept. of Education, and U.S. Census ACS for the 2023–24 school year. Rankings computed by MySchoolScout. See all data sources.
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