Enrollment
557
California · 2024-25 NCES data
Elementary school (grades K-5) · Oxnard, CA
Rio Rosales
Federal NCES profile for Rio Rosales, including enrollment, faculty, free-lunch eligibility, demographics, and resource indicators - Resource Investment Index 11/100.
2024-25 NCES dataElementary school (grades K-5)NCES 063276008667
👥 S:T ratio 3
🌟 Gifted program 30
🎓 Counselors 0
📋 Attendance 12
Scored 0–100 from federal NCES and CRDC indicators, resource allocation, not test scores. Full methodology →
The verdict
Rio Rosales earns 11/100 on the Resource Investment Index, with class sizes larger than 73% of California schools.
- #31 of 32
- elementary schools in Oxnard · Resource Index
- 11
- Resource Index · Lower
- 24.2:1
- large classes for California
- 52.1%
- free-lunch eligible
Rio Rosales has class sizes larger than 73% of California schools. Computed live against every California school reporting to NCES.
By Resource Investment Index, Rio Rosales ranks #31 of 32 elementary schools in Oxnard, CA.
School address
District: Rio Elementary · California
NCES ID 063276008667 Verify on NCES CCD record →
Teachers (FTE)
23.0
Federal CCD staff survey
Students per teacher
24.2:1
vs 21.5:1 California avg
+13% vs state
Free-lunch eligible
52.1%
vs 55.5% California avg
-6% vs state
Student-teacher ratio in context
How Rio Rosales compares with California and U.S. medians
What stands out at Rio Rosales
Rio Rosales is a higher-need, mid-sized elementary school in Oxnard, California, enrolling 557 students.
Class loads run somewhat heavier than typical: 24.2:1 puts it in the larger third of California schools by student-teacher ratio.
Its free-meal eligibility rate of 52.1% lands close to the California typical range, neither a high- nor low-need campus by this measure.
With 557 students, its enrollment sits close to the California median campus size.
Its Resource Investment Index trails 96% of the 9,998 California schools with a score on record, one of the lower results on this measure.
Among 1,595 similarly sized, similarly resourced-need California schools statewide, it ranks #1,470, in the lower tier once campus size and economic need are matched.
Its student body is predominantly Hispanic or Latino (82% of enrollment) (diversity index 32/100).
Counselor access is stretched at roughly 557 students per counselor, well above the ASCA-recommended 250:1 ceiling.
Chronic absenteeism is elevated: 35.2% of students missed 10% or more of school days (2021-22 Civil Rights Data Collection).
Among Oxnard's elementary schools, it stands alongside Juan Lagunas Soria Elementary (895 students): Rio Rosales is smaller than that campus by headcount and runs heavier classes (24.2:1 vs 22.9:1).
Rio Elementary also operates Rio Del Sol (839 students) and Rio Real Elementary (794 students) alongside Rio Rosales.
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 Rosales compares
Rio Rosales on the metrics families compare, against California and U.S. means.
| Metric | This school | vs California | California avg | U.S. avg |
|---|---|---|---|---|
| Students per teacher | 24.2:1 | ▲ 13% | 21.5:1 | 15.7:1 |
| Free-lunch eligible | 52.1% | ▼ 6% | 55.5% | 51.7% |
| Enrollment | 557 | top 37% | - | - |
Source: NCES Common Core of Data School-level CCD + state/national means from Public School Universe · 2024-25
24.2:1
Leaner classes than 6% of US schools, heavier class loads than most.
557
Bigger than 68% of US schools by enrollment, mid-sized for the country.
Equity indicators (what these measure)
Economic need
52.1%
free-lunch eligible
- 6% 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
24.2:1
students per teacher
- 13% above state mean
Top 73% in California - lower ratio than 27% of state schools
Well above 20:1, one of the more stretched staffing loads nationally relative to enrollment.
Engagement
35.2%
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
$15,938
per pupil, district-wide
- below California avg of $16,509
Close to the U.S. public-school average per-pupil spend.
Support staff
Counselors1.0 FTE
Per 557 students, the combined health-and-guidance staffing load for this school.
Discipline context
0
in-school suspensions + 5 out-of-school
Suspension rate: 0.0 per 100 students. Combined in-school and out-of-school rate: 0.9 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
Hispanic or Latino 82.0%
Asian 9.5%
White 3.8%
Two or More 2.3%
African American 2.2%
American Indian / Alaska Native 0.2%
Largest group: Hispanic or Latino at 82.0% of enrollment.
Student-body diversity index 31.6/100
Simpson diversity index - at 31.6, Rio Rosales is less mixed than the California school average of 46.0.
Programs
Funding & spending
District-wide per-pupil expenditure for Rio Elementary, which includes Rio Rosales.
$15,938
Per student
-3%
vs California
Avg $16,509
-4%
vs U.S.
Avg $16,593
Revenue mix
Local 32.2%
State 57.4%
Federal 10.3%
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 Rosales Compares to District-Mates
| School | Enrollment | Economic Profile | Student-Teacher Ratio |
|---|---|---|---|
| Rio Del Sol | Larger | Lower economic need | Similar S:T ratio |
| Rio Real Elementary | Larger | Similar economic need | Similar S:T ratio |
| Rio Vista Middle | Similar size | Similar economic need | Lower S:T ratio |
| Rio Del Valle Middle | Similar size | Similar economic need | Lower S:T ratio |
| Rio Del Mar | Similar size | Similar economic need | Higher S:T ratio |
Comparisons are relative to Rio Rosales's own figures; each column derives from NCES Common Core of Data.
Other Schools in This District
- Enrollment
- 839
- Students per teacher
- 25.4:1
- Resource Index
- 30/100
- Enrollment
- 794
- Students per teacher
- 24.8:1
- Resource Index
- 30/100
- Enrollment
- 637
- Students per teacher
- 19.9:1
- Resource Index
- 29/100
- Enrollment
- 569
- Students per teacher
- 17.2:1
- Resource Index
- 35/100
- Enrollment
- 499
- Students per teacher
- 31.2:1
- Resource Index
- 30/100
Similar elementary schools in Oxnard
6 comparable elementary schools (grades K-5) serving the same city.
Juan Lagunas Soria Elementary
Standard public school
895 students 22.9:1 students per teacher
Driffill Elementary
Standard public school
891 students 17.5:1 students per teacher
Kamala Elementary
Standard public school
842 students 20.5:1 students per teacher
Rio Del Sol
Standard public school
839 students 25.4:1 students per teacher
Curren Elementary
Standard public school
817 students 18.2:1 students per teacher
Lemonwood Elementary
Standard public school
808 students 18.4:1 students per teacher
Similar elementary 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 (~557 students)
Similar student-teacher ratio (~24.2:1)
Next steps
Verify locally before acting on Rio Rosales's federal record.
- Compare Rio Rosales against another school. Compare schools
- Rio Elementary'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 Rosales
How many students attend Rio Rosales?
Rio Rosales has 557 students enrolled. It is an elementary school in Oxnard, CA.
What is the student-teacher ratio at Rio Rosales?
The student-teacher ratio at Rio Rosales is 24.2:1, which is 13% higher than the California average of 21.5:1 and 54% higher than the national average of 15.7:1.
What percentage of students receive free lunch at Rio Rosales?
52.1% of students at Rio Rosales are eligible for free lunch, compared to the California average of 55.5%.
What is the racial and ethnic makeup of Rio Rosales?
The largest demographic group at Rio Rosales is Hispanic or Latino at 82.0% of enrollment, in Oxnard, CA.
What is the Resource Investment Index for Rio Rosales?
Rio Rosales has a Resource Investment Index of 11/100 (lower reported resources relative to schools nationally) based on 4 factors: student-teacher ratio, counselor availability, attendance rates. Not a test-score or academic measure (national median ~41/100, see methodology).
How does Rio Rosales rank among elementary schools in Oxnard?
By Resource Investment Index, Rio Rosales ranks #31 of 32 elementary schools in Oxnard, CA. This compares federal resource and staffing data among local peers; it is not a test-score or academic ranking. See all elementary schools in Oxnard on the city page.
Is Rio Rosales a good school?
Rio Rosales earns 11/100 on the Resource Investment Index, with class sizes larger than 73% 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 Rio Elementary?
Besides Rio Rosales, Rio Elementary also operates Rio Del Sol (839 students), Rio Real Elementary (794 students), and Rio Vista Middle (637 students). See the Rio Elementary 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.