Enrollment
18
California · 2024-25 NCES data
Other / mixed grade configuration · Rio Vista, CA
River Delta High/Elementary (Alternative)
Federal NCES profile for River Delta High/Elementary (Alternative), including enrollment, faculty, free-lunch eligibility, demographics, and resource indicators - Resource Investment Index 29/100.
2024-25 NCES dataOther / mixed grade configurationNCES 063311009429
👥 S:T ratio 28
🌟 Gifted program 30
Scored 0–100 from federal NCES and CRDC indicators, resource allocation, not test scores. Full methodology →
The verdict
River Delta High/Elementary (Alternative) earns 29/100 on the Resource Investment Index, even as it posts class sizes smaller than 79% of California schools. It is also one of the smallest schools in California.
- #3 of 4
- public schools in Rio Vista · Resource Index
- 29
- Resource Index · Lower
- 18:1
- small classes for California
- 57.1%
- free-lunch eligible
River Delta High/Elementary (Alternative) has class sizes smaller than 79% of California schools. Computed live against every California school reporting to NCES.
By Resource Investment Index, River Delta High/Elementary (Alternative) ranks #3 of 4 public schools in Rio Vista, CA.
School address
District: River Delta Joint Unified · California
NCES ID 063311009429 Verify on NCES CCD record →
Teachers (FTE)
1.0
Federal CCD staff survey
Students per teacher
18:1
vs 21.5:1 California avg
-16% vs state
Free-lunch eligible
57.1%
vs 55.5% California avg
+3% vs state
Student-teacher ratio in context
How River Delta High/Elementary (Alternative) compares with California and U.S. medians
What stands out at River Delta High/Elementary (Alternative)
River Delta High/Elementary (Alternative) is a higher-need, small combined-grade school in Rio Vista, California, enrolling 18 students.
Class sizes run a bit leaner than typical: 18:1 puts it in the smaller third of California schools by student-teacher ratio.
Its free-meal eligibility rate of 57.1% lands close to the California typical range, neither a high- nor low-need campus by this measure.
This is a small campus: fewer students than 97% of California schools, with 18 enrolled.
Its Resource Investment Index sits near the middle of the pack among 9,998 scored California schools.
Among 77 similarly sized, similarly resourced-need California schools statewide, it ranks #56, in the lower tier once campus size and economic need are matched.
Its student body is predominantly White (83% of enrollment) (diversity index 30/100).
River Delta Joint Unified also operates D. H. White Elementary (432 students) and Rio Vista High (317 students) alongside River Delta High/Elementary (Alternative).
Sourced from NCES CCD, CRDC, and F-33 (federal records, not a quality verdict). How we source and compute this.
Source: National Center for Education Statistics Common Core of Data + CRDC + F-33 · 2024-25
How River Delta High/Elementary (Alternative) compares
River Delta High/Elementary (Alternative) on the metrics families compare, against California and U.S. means.
| Metric | This school | vs California | California avg | U.S. avg |
|---|---|---|---|---|
| Students per teacher | 18:1 | ▼ 16% | 21.5:1 | 15.7:1 |
| Free-lunch eligible | 57.1% | ▲ 3% | 55.5% | 51.7% |
| Enrollment | 18 | top 97% | - | - |
Source: NCES Common Core of Data School-level CCD + state/national means from Public School Universe · 2024-25
18:1
Leaner classes than 24% of US schools, heavier class loads than most.
18
Bigger than 2% of US schools by enrollment, a small campus.
Equity indicators (what these measure)
Economic need
57.1%
free-lunch eligible
- 3% above the California average of 55.5%
Above the 40% Title I schoolwide threshold; federal funds support the whole school, not individual students.
Staffing depth
18:1
students per teacher
- 16% below state mean
Top 21% in California - lower ratio than 79% of state schools
Between 16:1 and 20:1, squarely in the typical U.S. public-school staffing range.
Funding equity
$13,859
per pupil, district-wide
- below California avg of $16,509
Somewhat below the U.S. average per-pupil spend; funding constraints may affect programs, facilities, and staffing.
Support staff
Counselors0.0 FTE
Student-support staffing from the Civil Rights Data Collection.
Discipline context
0
in-school suspensions + 0 out-of-school
Suspension rate: 0.0 per 100 students. Combined in-school and out-of-school rate: 0.0 per 100 students. Reported via the Civil Rights Data Collection.
Overview
- Common Core of Data (June 2026): enrollment, staffing, and the student-teacher ratio above.
- Civil Rights Data Collection: discipline counts and program access (AP, gifted, special education).
- F-33 School District Finance Survey: the district-wide per-pupil spending figures below.
Three separate federal collections, each on its own reporting cadence - which is why this school's numbers line up on a consistent basis against every other school and state on this site, rather than mixing figures pulled from different survey years.
Student demographics
White 83.3%
Hispanic or Latino 5.6%
American Indian / Alaska Native 5.6%
Two or More 5.6%
Largest group: White at 83.3% of enrollment.
Student-body diversity index 29.7/100
Simpson diversity index - at 29.7, River Delta High/Elementary (Alternative) is less mixed than the California school average of 46.0.
Programs
Funding & spending
District-wide per-pupil expenditure for River Delta Joint Unified, which includes River Delta High/Elementary (Alternative).
$13,859
Per student
-16%
vs California
Avg $16,509
-16%
vs U.S.
Avg $16,593
Revenue mix
Local 50.1%
State 41.9%
Federal 8.0%
Source: NCES F-33 School District Finance Survey District-level finance · FY 2021-22 Per-pupil expenditure reflects the district-wide average. Individual school budgets are not reported at the federal level.
How River Delta High/Elementary (Alternative) Compares to District-Mates
| School | Enrollment | Economic Profile | Student-Teacher Ratio |
|---|---|---|---|
| D. H. White Elementary | Larger | Lower economic need | Higher S:T ratio |
| Rio Vista High | Larger | Lower economic need | Lower S:T ratio |
| Delta High | Larger | Lower economic need | Lower S:T ratio |
| Isleton Elementary | Larger | Similar economic need | Higher S:T ratio |
| Clarksburg Middle | Larger | Similar economic need | Higher S:T ratio |
Comparisons are relative to River Delta High/Elementary (Alternative)'s own figures; each column derives from NCES Common Core of Data.
Other Schools in This District
- Enrollment
- 432
- Students per teacher
- 33.2:1
- Resource Index
- 7/100
- Enrollment
- 317
- Students per teacher
- 14.4:1
- Resource Index
- 37/100
- Enrollment
- 196
- Students per teacher
- 15.1:1
- Resource Index
- 43/100
- Enrollment
- 188
- Students per teacher
- 20.9:1
- Resource Index
- 24/100
- Enrollment
- 171
- Students per teacher
- 21.4:1
- Resource Index
- 15/100
Similar other schools statewide
Matched by enrollment size and by staffing ratio across all of California, not just this city - a different peer set than the local comparisons above.
Similar enrollment (~18 students)
Next steps
Verify locally before acting on River Delta High/Elementary (Alternative)'s federal record.
- Compare River Delta High/Elementary (Alternative) against another school. Compare schools
- River Delta Joint Unified's spending and staffing shape this school. District profile
- Confirm current enrollment and boundaries with the school. Choosing guide
Federal record (CCD 2024-25, CRDC 2021-22) - PlainSchools assigns no subjective rating; the composite quality score is a transparent, reproducible index computed from this cited federal data.
Frequently asked questions about River Delta High/Elementary (Alternative)
How many students attend River Delta High/Elementary (Alternative)?
River Delta High/Elementary (Alternative) has 18 students enrolled. It is an alternative school in Rio Vista, CA.
What is the student-teacher ratio at River Delta High/Elementary (Alternative)?
The student-teacher ratio at River Delta High/Elementary (Alternative) is 18:1, which is 16% lower than the California average of 21.5:1 and 15% higher than the national average of 15.7:1. Lower ratios generally mean more individual attention per student.
What percentage of students receive free lunch at River Delta High/Elementary (Alternative)?
57.1% of students at River Delta High/Elementary (Alternative) are eligible for free lunch, compared to the California average of 55.5%.
What is the racial and ethnic makeup of River Delta High/Elementary (Alternative)?
The largest demographic group at River Delta High/Elementary (Alternative) is White at 83.3% of enrollment, in Rio Vista, CA.
What is the Resource Investment Index for River Delta High/Elementary (Alternative)?
River Delta High/Elementary (Alternative) has a Resource Investment Index of 29/100 (lower reported resources relative to schools nationally) based on 2 factors: student-teacher ratio. Not a test-score or academic measure (national median ~41/100, see methodology). Limited indicators were available, so the index reflects partial data.
How does River Delta High/Elementary (Alternative) rank among public schools in Rio Vista?
By Resource Investment Index, River Delta High/Elementary (Alternative) ranks #3 of 4 public schools in Rio Vista, CA. This compares federal resource and staffing data among local peers; it is not a test-score or academic ranking. See all public schools in Rio Vista on the city page.
Is River Delta High/Elementary (Alternative) a good school?
River Delta High/Elementary (Alternative) earns 29/100 on the Resource Investment Index, even as it posts class sizes smaller than 79% of California schools. It is also one of the smallest schools in California. This is a resource snapshot, not an academic rating; see the Resource Investment Index question above for what the number does and doesn't measure.
What other schools are in River Delta Joint Unified?
Besides River Delta High/Elementary (Alternative), River Delta Joint Unified also operates D. H. White Elementary (432 students), Rio Vista High (317 students), and Delta High (196 students). See the River Delta Joint Unified district page for the complete list.
Related tools
Every figure on PlainSchools is rendered directly from the source NCES, CRDC and F-33 federal records, no number is typed in by an editor. Each school's figures reflect its most recent NCES/CRDC submission on file. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of June 2026.