Enrollment
317
California · 2024-25 NCES data
High school (grades 9-12) · Rio Vista, CA
Rio Vista High
Federal NCES profile for Rio Vista High, including enrollment, faculty, free-lunch eligibility, demographics, and resource indicators - Resource Investment Index 39/100.
2024-25 NCES dataHigh school (grades 9-12)NCES 063311005125
👥 S:T ratio 42
📚 AP courses 45
🌟 Gifted program 70
🎓 Counselors 37
📋 Attendance 0
Scored 0–100 from federal NCES and CRDC indicators, resource allocation, not test scores. Full methodology →
The verdict
Rio Vista High earns 39/100 on the Resource Investment Index, with class sizes smaller than 90% of California schools.
- #1 of 4
- public schools in Rio Vista · Resource Index
- 39
- Resource Index · Typical
- 14.4:1
- small classes for California
- 45.8%
- free-lunch eligible
Rio Vista High has class sizes smaller than 90% of California schools. Computed live against every California school reporting to NCES.
By Resource Investment Index, Rio Vista High ranks #1 of 4 public schools in Rio Vista, CA.
School address
District: River Delta Joint Unified · California
NCES ID 063311005125 Verify on NCES CCD record →
Teachers (FTE)
22.0
Federal CCD staff survey
Students per teacher
14.4:1
vs 21.5:1 California avg
-33% vs state
Free-lunch eligible
45.8%
vs 55.5% California avg
-17% vs state
Student-teacher ratio in context
How Rio Vista High compares with California and U.S. medians
What stands out at Rio Vista High
Rio Vista High is a mid-sized high school in Rio Vista, California, enrolling 317 students.
Classes run notably small here: at 14.4:1, Rio Vista High is leaner than roughly 90% of California schools and 33% under the state's 21.5:1 norm, more adult attention per pupil than most peers.
Economic need runs somewhat below the state's typical profile, with 45.8% of students eligible for free meals.
Enrollment of 317 puts it in the smaller third of California schools by headcount.
Its Resource Investment Index lands in the upper third of 9,998 scored California schools.
Against 910 statewide peers matched on enrollment and economic need, it ranks in the upper tier at #209.
Its student body is led by Hispanic or Latino (52%) and White (34%) (diversity index 60/100).
On the academic-pipeline side it reports 9 Advanced Placement courses.
Counselor coverage runs a bit thin, about 317 students per counselor, somewhat past the ASCA-recommended 250:1 benchmark.
Chronic absenteeism is elevated: 47.9% of students missed 10% or more of school days (2021-22 Civil Rights Data Collection).
The federal civil-rights collection also records 1 expulsion at this campus for 2021-22.
River Delta Joint Unified also operates D. H. White Elementary (432 students) and Delta High (196 students) alongside Rio Vista High.
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 Rio Vista High compares
Rio Vista High on the metrics families compare, against California and U.S. means.
| Metric | This school | vs California | California avg | U.S. avg |
|---|---|---|---|---|
| Students per teacher | 14.4:1 | ▼ 33% | 21.5:1 | 15.7:1 |
| Free-lunch eligible | 45.8% | ▼ 17% | 55.5% | 51.7% |
| Enrollment | 317 | top 72% | - | - |
Source: NCES Common Core of Data School-level CCD + state/national means from Public School Universe · 2024-25
14.4:1
Leaner classes than 53% of US schools, a middle-of-the-pack class size.
317
Bigger than 35% of US schools by enrollment, mid-sized for the country.
Equity indicators (what these measure)
Economic need
45.8%
free-lunch eligible
- 17% below the California average of 55.5%
Above the 40% Title I schoolwide threshold; federal funds support the whole school, not individual students.
Staffing depth
14.4:1
students per teacher
- 33% below state mean
Top 10% in California - lower ratio than 90% of state schools
Close to the 15:1 benchmark most often cited for individualized attention.
Engagement
47.9%
chronically absent (missed 10%+ of school days)
At or above 20%, the commonly used threshold for "high" chronic absenteeism, signaling significant barriers to regular attendance.
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
Counselors1.0 FTE
Per 317 students, the combined health-and-guidance staffing load for this school.
Discipline context
26
in-school suspensions + 25 out-of-school
Suspension rate: 8.2 per 100 students. Combined in-school and out-of-school rate: 16.1 per 100 students. Reported via the Civil Rights Data Collection. Includes 1 expulsion.
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
Hispanic or Latino 52.1%
White 34.4%
Two or More 8.2%
African American 2.5%
Asian 1.6%
American Indian / Alaska Native 0.6%
Native Hawaiian / Pacific Islander 0.6%
Largest group: Hispanic or Latino at 52.1% of enrollment.
Student-body diversity index 60.3/100
Simpson diversity index - at 60.3, Rio Vista High is more mixed than the California school average of 46.0.
Programs
AP courses offered 9
Gifted & talented Yes
Funding & spending
District-wide per-pupil expenditure for River Delta Joint Unified, which includes Rio Vista High.
$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 Rio Vista High Compares to District-Mates
| School | Enrollment | Economic Profile | Student-Teacher Ratio |
|---|---|---|---|
| D. H. White Elementary | Larger | Similar economic need | Higher S:T ratio |
| Delta High | Smaller | Similar economic need | Similar S:T ratio |
| Isleton Elementary | Smaller | Similar economic need | Higher S:T ratio |
| Clarksburg Middle | Smaller | Similar economic need | Higher S:T ratio |
| Riverview Middle | Smaller | Similar economic need | Higher S:T ratio |
Comparisons are relative to Rio Vista High'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
- 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
- Enrollment
- 160
- Students per teacher
- 17.8:1
- Resource Index
- 33/100
Similar high 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 (~317 students)
Similar student-teacher ratio (~14.4:1)
Next steps
Verify locally before acting on Rio Vista High's federal record.
- Compare Rio Vista High 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 Rio Vista High
How many students attend Rio Vista High?
Rio Vista High has 317 students enrolled. It is a high school in Rio Vista, CA.
What is the student-teacher ratio at Rio Vista High?
The student-teacher ratio at Rio Vista High is 14.4:1, which is 33% lower than the California average of 21.5:1 and 8% lower 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 Rio Vista High?
45.8% of students at Rio Vista High are eligible for free lunch, compared to the California average of 55.5%.
What is the racial and ethnic makeup of Rio Vista High?
The largest demographic group at Rio Vista High is Hispanic or Latino at 52.1% of enrollment, in Rio Vista, CA. Its student body is more racially and ethnically mixed than most US schools, with a diversity index of 60.3/100.
What is the Resource Investment Index for Rio Vista High?
Rio Vista High has a Resource Investment Index of 39/100 (typical reported resources relative to schools nationally) based on 5 factors: student-teacher ratio, AP course offerings, counselor availability, attendance rates. Not a test-score or academic measure (national median ~41/100, see methodology).
How does Rio Vista High rank among public schools in Rio Vista?
By Resource Investment Index, Rio Vista High ranks #1 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 Rio Vista High a good school?
Rio Vista High earns 39/100 on the Resource Investment Index, with class sizes smaller than 90% of California schools. 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 Rio Vista High, River Delta Joint Unified also operates D. H. White Elementary (432 students), Delta High (196 students), and Isleton Elementary (188 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.