- Enrollment
- 590
- Students per teacher
- 24.6:1
- Resource Index
- 35/100
Elementary school (grades K-5) · Plumas Lake, CA
Rio Del Oro Elementary
Federal NCES profile for Rio Del Oro Elementary, including enrollment, faculty, free-lunch eligibility, demographics, and resource indicators - Resource Investment Index 36/100.
2024-25 NCES dataElementary school (grades K-5)NCES 063118011547
👥 S:T ratio 10
🌟 Gifted program 30
📋 Attendance 68
Scored 0–100 from federal NCES and CRDC indicators, resource allocation, not test scores. Full methodology →
The verdict
Rio Del Oro Elementary earns 36/100 on the Resource Investment Index, with class sizes near the California median. It is also more racially and ethnically mixed than most California schools.
- #1 of 3
- public schools in Plumas Lake · Resource Index
- 36
- Resource Index · Typical
- 22.6:1
- students per teacher
- 28.1%
- free-lunch eligible
Rio Del Oro Elementary has class sizes near the California median. Computed live against every California school reporting to NCES.
By Resource Investment Index, Rio Del Oro Elementary ranks #1 of 3 public schools in Plumas Lake, CA.
School address
District: Plumas Lake Elementary · California
NCES ID 063118011547 Verify on NCES CCD record →
CCD year-over-year · 2022-23 → 2023-24
+20 students YoY
Rio Del Oro Elementary held near 521 students from 2022-23 to 2023-24 (+20 headcount).
Teacher FTE lost 25.0 → 24.0 across the same CCD years.
Source: NCES Common Core of Data public-school universe (2022-23, 2023-24).
Steady CCD campus
+20 students YoY 063118011547 · Plumas Lake, CA Elementary · MID · TRAD
564 enr · 22.6:1 · 28.1% lunch · RII 36
Nearest enrollment peer: Cobblestone Elementary (590 students)
Rio Del Oro Elementary held near 521 students from 2022-23 to 2023-24 (+20 headcount). Teacher FTE lost 25.0 → 24.0 across the same CCD years. Read with this school → · District book → · California schools → · Find another →
Rio Del Oro Elementary in the enrollment neighbourhood
Fall enrollment among this campus and nearest district peers
- Cobblestone El
Cobblestone Elementary
590 students
- This school
Rio Del Oro Elementary
564 students
- Riverside Mead
Riverside Meadows Intermediate
528 students
What this shows Rio Del Oro Elementary reports 564 students on the CCD universe file.
How Rio Del Oro Elementary compares
Rio Del Oro Elementary held steady on CCD headcount: ratios and free-lunch share vs California and U.S. means.
| Metric | This school | vs California | California avg | U.S. avg |
|---|---|---|---|---|
| Students per teacher | 22.6:1 | ▲ 5% | 21.5:1 | 15.7:1 |
| Free-lunch eligible | 28.1% | ▼ 49% | 55.5% | 51.7% |
| Enrollment | 564 | top 36% | - | - |
Source: NCES Common Core of Data School-level CCD + state/national means from Public School Universe · 2024-25
22.6:1
Leaner classes than 9% of US schools, heavier class loads than most.
564
Bigger than 69% of US schools by enrollment, mid-sized for the country.
Equity indicators methodology
Economic need
28.1%
free-lunch eligible
- 49% below the California average of 55.5%
Below the 40% Title I threshold; federal aid targets individual qualifying students rather than schoolwide programs.
Staffing depth
22.6:1
students per teacher
- 5% above state mean
Top 59% in California - lower ratio than 41% of state schools
Above 20:1, running heavier than the typical U.S. public school; staffing is comparatively stretched.
Engagement
12.9%
chronically absent (missed 10%+ of school days)
In the 10-15% range, above the pre-pandemic national baseline but within the broader post-pandemic picture.
Funding equity
$15,424
per pupil, district-wide
- below California avg of $18,665
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
4
in-school suspensions + 10 out-of-school
Suspension rate: 0.7 per 100 students. Combined in-school and out-of-school rate: 2.5 per 100 students. Reported via the Civil Rights Data Collection.
Student demographics
White 36.7%
Hispanic or Latino 34.6%
Two or More 13.8%
Asian 10.1%
African American 3.7%
Native Hawaiian / Pacific Islander 0.9%
American Indian / Alaska Native 0.2%
Largest group: White at 36.7% of enrollment.
Student-body diversity index 71.5/100
Simpson diversity index - at 71.5, Rio Del Oro Elementary is more mixed than the California school average of 46.0.
Programs
District finance for Plumas Lake Elementary reports $15,424 per pupil (NCES F-33) - open the district page for the full revenue mix.
How Rio Del Oro Elementary Compares to District-Mates
| School | Enrollment | Economic Profile | Student-Teacher Ratio |
|---|---|---|---|
| Cobblestone Elementary | Similar size | Similar economic need | Higher S:T ratio |
| Riverside Meadows Intermediate | Similar size | Similar economic need | Lower S:T ratio |
Comparisons are relative to Rio Del Oro Elementary's own figures; each column derives from NCES Common Core of Data.
Other Schools in This District
- Enrollment
- 528
- Students per teacher
- 21.1:1
- Resource Index
- 36/100
Similar elementary schools in Plumas Lake
1 comparable elementary schools (grades K-5) serving the same city.
Nationwide elementary schools with similar size or staffing
Out-of-state peers matched by enrollment and by student-teacher ratio, not the same-city or same-district lists above.
Similar enrollment (~564 students)
Frequently asked questions about Rio Del Oro Elementary
How many students attend Rio Del Oro Elementary?
Rio Del Oro Elementary has 564 students enrolled. It is an elementary school in Plumas Lake, CA. CCD year-over-year: 501 (2022-23) → 521 (2023-24), nearly flat (+20).
What is the student-teacher ratio at Rio Del Oro Elementary?
The student-teacher ratio at Rio Del Oro Elementary is 22.6:1, which is 5% higher than the California average of 21.5:1 and 44% higher than the national average of 15.7:1.
What percentage of students receive free lunch at Rio Del Oro Elementary?
28.1% of students at Rio Del Oro Elementary are eligible for free lunch, compared to the California average of 55.5%.
What is the racial and ethnic makeup of Rio Del Oro Elementary?
The largest demographic group at Rio Del Oro Elementary is White at 36.7% of enrollment, in Plumas Lake, CA. Its student body is more racially and ethnically mixed than most US schools, with a diversity index of 71.5/100.
What is the Resource Investment Index for Rio Del Oro Elementary?
Rio Del Oro Elementary has a Resource Investment Index of 36/100 (typical reported resources relative to schools nationally) based on 3 factors: student-teacher ratio, gifted-program reporting, chronic absenteeism. Not a test-score or academic measure (national median ~41/100, see methodology).
How does Rio Del Oro Elementary rank among public schools in Plumas Lake?
By Resource Investment Index, Rio Del Oro Elementary ranks #1 of 3 public schools in Plumas Lake, CA. This compares federal resource and staffing data among local peers; it is not a test-score or academic ranking.
What other schools are in Plumas Lake Elementary?
Besides Rio Del Oro Elementary, Plumas Lake Elementary also operates Cobblestone Elementary (590 students) and Riverside Meadows Intermediate (528 students). See the Plumas Lake Elementary district page for the complete list.