River Delta Joint Unified School District
School District · Rio Vista, California
Avg Rating
5.5
out of 10
Schools
11
4 elem, 2 mid, 4 high
Per-Pupil Spending
$16,964
Student-Teacher Ratio
18.6:1
Avg Rating
5.5
out of 10
Schools
11
4 elem, 2 mid, 4 high
Per-Pupil Spending
$16,964
Student-Teacher Ratio
18.6:1
Evaluating River Delta Joint Unified?
A district shares budget, policy, and attendance zones across its schools — use this page to judge River Delta Joint Unified 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.
Delta High
Clarksburg · High. Compare this profile against district averages, level fit, and attendance-zone reality below.
Isleton Elementary
Isleton · Elementary. Compare this profile against district averages, level fit, and attendance-zone reality below.
Walnut Grove Elementary
Walnut Grove · Elementary. Compare this profile against district averages, level fit, and attendance-zone reality below.
How this district compares
California rank
#531 of 713
districts by avg. composite
Vs. state average
-0.8
below California avg
Per-pupil spending
$16,964
$683 vs California median
District size
1,753 students
Smaller than California median
The short answer
River Delta Joint Unified ranks #531 of 713 California districts by overall school rating. River Delta Joint Unified's schools with real test data average 5.5/10 across 8 schools. Its top-rated schools are Delta High (7.9/10), Isleton Elementary (7.8/10), and Walnut Grove Elementary (5.2/10). Schools with estimated (proxy) scores are excluded from this ranking.
Rates 7.8/10 despite 81% of students being economically disadvantaged. That's about 2.3 points higher than its student-poverty level predicts. Roughly as clean a case of strong results without an affluent-ZIP price tag as you'll find among River Delta Joint Unified schools.
STAAR proficiency rose +9.2 points from 2022 to 2024. That's the biggest jump among River Delta Joint Unified schools across the two most recent comparable testing years.
Top-Rated Schools in River Delta Joint Unified
Ranked by MySchoolScout composite rating using only schools with real test data (8 of 11). "Value" = points above what student poverty predicts. Estimated (proxy) scores are excluded.
| # | School | Rating |
|---|---|---|
| 1 | Delta High | 7.9 / 10 |
| 2 | Isleton Elementary | 7.8 / 10 |
| 3 | Walnut Grove Elementary | 5.2 / 10 |
| 4 | Clarksburg Middle | 5.1 / 10 |
| 5 | Riverview Middle | 5.1 / 10 |
| 6 | Bates Elementary | 4.9 / 10 |
| 7 | Rio Vista High | 4.6 / 10 |
| 8 | D. H. White Elementary | 3.1 / 10 |
See all 11 schools — including those with estimated data — in the full directory below. How we rate schools.
About River Delta Joint Unified
River Delta Joint Unified is a Rio Vista, California school district serving 11 schools. The district educates 1,753 students with a student-teacher ratio of 18.6:1. The district invests $16,964 per student annually.
With an average rating of 5.5/10, River Delta Joint Unified demonstrates solid academic performance.
The highest-rated school in the district is Delta High, which has a composite score of 7.9/10.
In standardized testing, River Delta Joint Unified students show an average math proficiency of 35.0% and ELA proficiency of 41.5%.
The district includes 4 elementary schools , 2 middle schools , and 4 high schools.
District Map
Schools in River Delta Joint Unified, colored by MySchoolScout rank. Click a pin for details.
District Average Test Scores
Average proficiency across all schools in River Delta Joint Unified with test data.
Schools in River Delta Joint Unified
11 schools Elementary Schools 4
Middle Schools 2
High Schools 4
Other Schools 1
District Details
- State
- California
- City
- Rio Vista
- Total Enrollment
- 1,753
- Teachers (FTE)
- 94
- Child Poverty Rate
- 0.1%
- Data Year
- 2023
Frequently Asked Questions
How many schools are in River Delta Joint Unified?
River Delta Joint Unified has 11 schools in total — 4 elementary, 2 middle, and 4 high schools. You can explore each school's ratings and details on this page.
What is the average rating for River Delta Joint Unified?
The average composite rating for River Delta Joint Unified is 5.5/10. This score is calculated from the individual ratings of all schools with academic data in the district.
What is the per-pupil spending in River Delta Joint Unified?
River Delta Joint Unified spends $16,964 per student per year.
What is the student-teacher ratio in River Delta Joint Unified?
The average student-teacher ratio in River Delta Joint Unified is 18.6:1.
What is the top-rated school in River Delta Joint Unified?
Delta High is the highest-rated school in River Delta Joint Unified with a composite score of 7.9/10.
What are the test scores in River Delta Joint Unified?
Across schools in River Delta Joint Unified with test data, the average math proficiency is 35.0% and the average ELA (reading/writing) proficiency is 41.5%. These figures represent the percentage of students meeting or exceeding grade-level standards.
How does River Delta Joint Unified compare to other districts in California?
River Delta Joint Unified has an average school rating of 5.5/10 across 11 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
- 5.5/10
- Math Proficiency
- 35.0%
- ELA Proficiency
- 41.5%
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 River Delta Joint Unified with neighboring districts in the state.
- Los Angeles Unified (785)
- San Diego Unified (175)
- San Francisco Unified (113)
- Fresno Unified (101)
- Long Beach Unified (82)
- Oakland Unified (82)
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- 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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