- Enrollment
- 2,215
- Students per teacher
- 21.7:1
- Resource Index
- 33/100
Elementary school (grades K-5) · Aptos, CA
Rio Del Mar Elementary
Federal NCES profile for Rio Del Mar Elementary, including enrollment, faculty, free-lunch eligibility, demographics, and resource indicators - Resource Investment Index 34/100.
2024-25 NCES dataElementary school (grades K-5)NCES 062949004549
👥 S:T ratio 8
🌟 Gifted program 70
📋 Attendance 23
Scored 0–100 from federal NCES and CRDC indicators, resource allocation, not test scores. Full methodology →
The verdict
Rio Del Mar Elementary earns 34/100 on the Resource Investment Index, with class sizes near the California median.
- #3 of 3
- elementary schools in Aptos · Resource Index
- 34
- Resource Index · Typical
- 23.1:1
- students per teacher
- 22.3%
- free-lunch eligible
Rio Del Mar Elementary has class sizes near the California median. Computed live against every California school reporting to NCES.
By Resource Investment Index, Rio Del Mar Elementary ranks #3 of 3 elementary schools in Aptos, CA.
School address
District: Pajaro Valley Unified · California
NCES ID 062949004549 Verify on NCES CCD record →
CCD year-over-year · 2022-23 → 2023-24
+4 students YoY
Rio Del Mar Elementary held near 408 students from 2022-23 to 2023-24 (+4 headcount).
Teacher FTE added 17.5 → 18.5 across the same CCD years.
Source: NCES Common Core of Data public-school universe (2022-23, 2023-24).
Steady CCD campus
+4 students YoY 062949004549 · Aptos, CA Elementary · SMALL · TRAD
393 enr · 23.1:1 · 22.3% lunch · RII 34
Nearest enrollment peer: Watsonville High (2,215 students)
Rio Del Mar Elementary held near 408 students from 2022-23 to 2023-24 (+4 headcount). Teacher FTE added 17.5 → 18.5 across the same CCD years. Read with this school → · District book → · California schools → · Find another →
Rio Del Mar Elementary in the enrollment neighbourhood
Fall enrollment among this campus and nearest district peers
- Watsonville Hi
Watsonville High
2,215 students
- Pajaro Valley
Pajaro Valley High
1,293 students
- Aptos High
Aptos High
1,274 students
- Alianza Charte 626
Alianza Charter
626 students
- Rolling Hills 588
Rolling Hills Middle
588 students
- This school 393
Rio Del Mar Elementary
393 students
What this shows Rio Del Mar Elementary reports 393 students on the CCD universe file.
How Rio Del Mar Elementary compares
Rio Del Mar 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 | 23.1:1 | ▲ 7% | 21.5:1 | 15.7:1 |
| Free-lunch eligible | 22.3% | ▼ 60% | 55.5% | 51.7% |
| Enrollment | 393 | top 62% | - | - |
Source: NCES Common Core of Data School-level CCD + state/national means from Public School Universe · 2024-25
23.1:1
Leaner classes than 8% of US schools, heavier class loads than most.
393
Bigger than 46% of US schools by enrollment, mid-sized for the country.
Equity indicators methodology
Economic need
22.3%
free-lunch eligible
- 60% below the California average of 55.5%
Below the 40% Title I threshold, among the lower-need profiles in the state; federal aid targets individual qualifying students rather than schoolwide programs.
Staffing depth
23.1:1
students per teacher
- 7% above state mean
Top 63% in California - lower ratio than 37% of state schools
Above 20:1, running heavier than the typical U.S. public school; staffing is comparatively stretched.
Engagement
30.8%
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
$20,320
per pupil, district-wide
- above California avg of $18,665
Somewhat above the U.S. public-school average, reflecting higher local or state investment per enrolled student.
Support staff
Counselors0.0 FTE
Student-support staffing from the Civil Rights Data Collection.
Discipline context
0
in-school suspensions + 3 out-of-school
Suspension rate: 0.0 per 100 students. Combined in-school and out-of-school rate: 0.8 per 100 students. Reported via the Civil Rights Data Collection.
Student demographics
White 63.4%
Hispanic or Latino 22.4%
Two or More 9.9%
Asian 3.3%
African American 0.5%
American Indian / Alaska Native 0.5%
Largest group: White at 63.4% of enrollment.
Student-body diversity index 53.7/100
Simpson diversity index - at 53.7, Rio Del Mar Elementary is more mixed than the California school average of 46.0.
Programs
Gifted & talented Yes
District finance for Pajaro Valley Unified reports $20,320 per pupil (NCES F-33) - open the district page for the full revenue mix.
How Rio Del Mar Elementary Compares to District-Mates
| School | Enrollment | Economic Profile | Student-Teacher Ratio |
|---|---|---|---|
| Watsonville High | Larger | Higher economic need | Similar S:T ratio |
| Pajaro Valley High | Larger | Higher economic need | Lower S:T ratio |
| Aptos High | Larger | Higher economic need | Lower S:T ratio |
| Alianza Charter | Larger | Higher economic need | Similar S:T ratio |
| Rolling Hills Middle | Larger | Higher economic need | Lower S:T ratio |
Comparisons are relative to Rio Del Mar Elementary's own figures; each column derives from NCES Common Core of Data.
Other Schools in This District
- Enrollment
- 1,293
- Students per teacher
- 19.9:1
- Resource Index
- 26/100
- Enrollment
- 1,274
- Students per teacher
- 19.6:1
- Resource Index
- 31/100
- Enrollment
- 626
- Students per teacher
- 22.4:1
- Resource Index
- 18/100
- Enrollment
- 588
- Students per teacher
- 21:1
- Resource Index
- 22/100
Similar elementary schools in Aptos
2 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 (~393 students)
Frequently asked questions about Rio Del Mar Elementary
How many students attend Rio Del Mar Elementary?
Rio Del Mar Elementary has 393 students enrolled. It is an elementary school in Aptos, CA. CCD year-over-year: 404 (2022-23) → 408 (2023-24), nearly flat (+4).
What is the student-teacher ratio at Rio Del Mar Elementary?
The student-teacher ratio at Rio Del Mar Elementary is 23.1:1, which is 7% higher than the California average of 21.5:1 and 47% higher than the national average of 15.7:1.
What percentage of students receive free lunch at Rio Del Mar Elementary?
22.3% of students at Rio Del Mar Elementary are eligible for free lunch, compared to the California average of 55.5%.
What is the racial and ethnic makeup of Rio Del Mar Elementary?
The largest demographic group at Rio Del Mar Elementary is White at 63.4% of enrollment, in Aptos, CA. Its student body is more racially and ethnically mixed than most US schools, with a diversity index of 53.7/100.
What is the Resource Investment Index for Rio Del Mar Elementary?
Rio Del Mar Elementary has a Resource Investment Index of 34/100 (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 Mar Elementary rank among elementary schools in Aptos?
By Resource Investment Index, Rio Del Mar Elementary ranks #3 of 3 elementary schools in Aptos, 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 Aptos on the city page.
What other schools are in Pajaro Valley Unified?
Besides Rio Del Mar Elementary, Pajaro Valley Unified also operates Watsonville High (2,215 students), Pajaro Valley High (1,293 students), and Aptos High (1,274 students). See the Pajaro Valley Unified district page for the complete list.