River Delta Joint Unified: River Delta Joint Unified schools score within 1.9 points of the state average. The trajectory from grade 3 to 5 falls 13.4 points.
River Delta Joint Unified has 6 ranked schools across elementary and high levels with an average Scope Score of 41.8/100 — within 1.9 points of the state average of 43.8. The highest-scoring school is Isleton Elementary at 67/100, where 37.8% of students exceed the state standard. The district spends $13,283 per student (below the state average of $14,815). 1 school shows positive growth trajectories. Chronic absenteeism averages 22.9%, above the state average. Data source: CDE CAASPP 2025 and NCES fiscal data, analyzed by SchoolScope.
| Level | Avg Score | Schools | Exceeded | Absent |
|---|---|---|---|---|
| Elementary | Developing 36.2/100 | 4 | 14.2% | 21.9% |
| High | Solid 53.2/100 | 2 | 6.0% | 24.8% |
River Delta Joint Unified's high schools average 53.2/100 — 5.7 points above the state average.
K–12 pipeline
The typical school path in River Delta Joint Unified, top-scoring shown first.
District Analysis
River Delta Joint Unified has 6 ranked schools with an average Scope Score of 41.8/100 — within 1.9 points of the state average of 43.8 (CDE CAASPP 2025).
Strongest level: River Delta Joint Unified's high schools lead the district with an average Scope Score of 53.2.
District-wide elementary growth averages -13.4pp (state avg: -3.0pp) — a declining trend worth examining school by school.
Score range of 49.2 points — showing significant variation between schools.
District chronic absenteeism averages 22.9%, 4.7pp above the state average of 18.1%.
District suspension rate averages 3.5%, near the state average of 1.7%.
Isleton Elementary leads the district at 67 with 37.8% exceeding standard.
How we score · Scope Score methodology
School archetypes in River Delta Joint Unified
Hidden gems: 1 school in River Delta Joint Unified is classified as Growth Engine — showing positive growth trajectories that raw proficiency scores alone don't capture. These are schools where students leave with more than they arrived with.
Archetypes are data-driven labels based on Scope Score dimensions. Learn more
Student demographics
District averages · California Department of Education enrollment data
District Funding
River Delta Joint Unified spends $13,283 per student in current expenditures — $1,531 below the state average of $14,815.
Data source: NCES Common Core of Data, Fiscal Survey (F-33) · 2019–2020
Teacher compensation
CDE Form J-90 salary schedule · 2024–25
Every school in River Delta Joint Unified
ranked by Scope Score · 2024–25 CAASPP
Elementary Schools (4)
River Delta Joint Unified has 4 ranked elementary schools averaging a Scope Score of 36.2 — 7.6 points below the state average of 43.8.
Growth averages -13.4pp district-wide — a declining trend worth examining.
The highest-scoring elementary school is Isleton Elementary with a Scope Score of 67 and 37.8% exceeding standard.
| # | School | Exceeded | Score |
|---|---|---|---|
| 1 | Isleton Elementary River Delta Joint Unified Growth Engine | 37.8% | Solid 67/100 |
| 2 | Walnut Grove Elementary River Delta Joint Unified Building Momentum | 8.5% | Developing 36/100 |
| 3 | Bates Elementary River Delta Joint Unified Building Momentum | 4.5% | Needs Support 24/100 |
| 4 | D. H. White Elementary River Delta Joint Unified Building Momentum | 6.0% | Needs Support 18/100 |
High Schools (2)
River Delta Joint Unified has 2 ranked high schools averaging a Scope Score of 53.2 — 5.7 points above the state average of 47.5.
The highest-scoring high school is Delta High with a Scope Score of 54 and 4.8% exceeding standard.
| # | School | Exceeded | Score |
|---|---|---|---|
| 1 | Delta High River Delta Joint Unified Building Momentum | 4.8% | Solid 54/100 |
| 2 | Rio Vista High River Delta Joint Unified Building Momentum | 7.2% | Solid 52/100 |
Data source: California Department of Education · CAASPP 2024-25 · Methodology
Scores are SchoolScope's analysis of public data, not official CDE ratings. They represent one way of interpreting test results and should not be the sole basis for school decisions.
Numbers tell you whether students are clearing the bar. A school visit tells you whether they're happy doing it. These metrics are intentionally missing from the Scope Score: class sizes and student-teacher interaction quality; arts, music, athletics, and enrichment programs; teacher experience and turnover; campus safety and social-emotional support; parent and community engagement; quality of special education and gifted programs; how resources are distributed across schools within the district. Full methodology