Enrollment
489
California · 2024-25 NCES data
Elementary school (grades K-5) · San Clemente, CA
San Onofre Elementary
Federal NCES profile for San Onofre Elementary, including enrollment, faculty, free-lunch eligibility, demographics, and resource indicators - Resource Investment Index 32/100.
2024-25 NCES dataElementary school (grades K-5)NCES 061350001544
👥 S:T ratio 32
🌟 Gifted program 70
🎓 Counselors 2
📋 Attendance 24
Scored 0–100 from federal NCES and CRDC indicators, resource allocation, not test scores. Full methodology →
The verdict
San Onofre Elementary earns 32/100 on the Resource Investment Index, with class sizes smaller than 84% of California schools.
- #3 of 7
- elementary schools in San Clemente · Resource Index
- 32
- Resource Index · Typical
- 16.9:1
- small classes for California
- 17.1%
- free-lunch eligible
San Onofre Elementary has class sizes smaller than 84% of California schools. Computed live against every California school reporting to NCES.
By Resource Investment Index, San Onofre Elementary ranks #3 of 7 elementary schools in San Clemente, CA.
School address
District: Fallbrook Union Elementary · California
NCES ID 061350001544 Verify on NCES CCD record →
Teachers (FTE)
29.0
Federal CCD staff survey
Students per teacher
16.9:1
vs 21.5:1 California avg
-21% vs state
Free-lunch eligible
17.1%
vs 55.5% California avg
-69% vs state
Student-teacher ratio in context
How San Onofre Elementary compares with California and U.S. medians
What stands out at San Onofre Elementary
San Onofre Elementary is a lower-poverty, mid-sized elementary school in San Clemente, California, enrolling 489 students.
Class sizes run a bit leaner than typical: 16.9:1 puts it in the smaller third of California schools by student-teacher ratio.
Comparatively few students face economic hardship here, 17.1% free-meal eligibility runs 69% below the California average.
With 489 students, its enrollment sits close to the California median campus size.
Its Resource Investment Index sits near the middle of the pack among 9,998 scored California schools.
Against 1,154 statewide peers matched on enrollment and economic need, it ranks mid-pack at #731.
Its student body is led by White (47%) and Hispanic or Latino (36%) (diversity index 64/100).
Counselor access is stretched at roughly 489 students per counselor, well above the ASCA-recommended 250:1 ceiling.
Chronic absenteeism is elevated: 30.3% of students missed 10% or more of school days (2021-22 Civil Rights Data Collection).
Its district draws 28.2% of revenue from federal sources, an above-typical federal share that tends to track a higher-need student population.
Among San Clemente's elementary schools, it stands alongside Las Palmas Elementary (743 students): San Onofre Elementary is smaller than that campus by headcount and runs leaner classes (16.9:1 vs 24.8:1).
Fallbrook Union Elementary also operates James E. Potter Intermediate (828 students) and Mary Fay Pendleton Elementary (820 students) alongside San Onofre Elementary.
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 San Onofre Elementary compares
San Onofre Elementary on the metrics families compare, against California and U.S. means.
| Metric | This school | vs California | California avg | U.S. avg |
|---|---|---|---|---|
| Students per teacher | 16.9:1 | ▼ 21% | 21.5:1 | 15.7:1 |
| Free-lunch eligible | 17.1% | ▼ 69% | 55.5% | 51.7% |
| Enrollment | 489 | top 47% | - | - |
Source: NCES Common Core of Data School-level CCD + state/national means from Public School Universe · 2024-25
16.9:1
Leaner classes than 31% of US schools, heavier class loads than most.
489
Bigger than 60% of US schools by enrollment, mid-sized for the country.
Equity indicators (what these measure)
Economic need
17.1%
free-lunch eligible
- 69% 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
16.9:1
students per teacher
- 21% below state mean
Top 16% in California - lower ratio than 84% of state schools
Between 16:1 and 20:1, squarely in the typical U.S. public-school staffing range.
Engagement
30.3%
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
$18,460
per pupil, district-wide
- above California avg of $16,509
Somewhat above the U.S. public-school average, reflecting higher local or state investment per enrolled student.
Support staff
Counselors1.0 FTE
Per 489 students, the combined health-and-guidance staffing load for this school.
Discipline context
3
in-school suspensions + 12 out-of-school
Suspension rate: 0.6 per 100 students. Combined in-school and out-of-school rate: 3.1 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 47.0%
Hispanic or Latino 35.6%
Two or More 9.4%
African American 4.3%
Asian 2.5%
Native Hawaiian / Pacific Islander 0.8%
American Indian / Alaska Native 0.4%
Largest group: White at 47.0% of enrollment.
Student-body diversity index 64.1/100
Simpson diversity index - at 64.1, San Onofre Elementary is more mixed than the California school average of 46.0.
Programs
Gifted & talented Yes
Funding & spending
District-wide per-pupil expenditure for Fallbrook Union Elementary, which includes San Onofre Elementary.
$18,460
Per student
+12%
vs California
Avg $16,509
+11%
vs U.S.
Avg $16,593
Revenue mix
Local 26.7%
State 45.1%
Federal 28.2%
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 San Onofre Elementary Compares to District-Mates
| School | Enrollment | Economic Profile | Student-Teacher Ratio |
|---|---|---|---|
| James E. Potter Intermediate | Larger | Higher economic need | Higher S:T ratio |
| Mary Fay Pendleton Elementary | Larger | Similar economic need | Higher S:T ratio |
| Live Oak Elementary | Larger | Higher economic need | Higher S:T ratio |
| Fallbrook Stem Academy | Similar size | Higher economic need | Higher S:T ratio |
| Maie Ellis Elementary | Similar size | Higher economic need | Higher S:T ratio |
Comparisons are relative to San Onofre Elementary's own figures; each column derives from NCES Common Core of Data.
Other Schools in This District
- Enrollment
- 828
- Students per teacher
- 21.2:1
- Resource Index
- 28/100
- Enrollment
- 820
- Students per teacher
- 21.6:1
- Resource Index
- 25/100
- Enrollment
- 717
- Students per teacher
- 23.1:1
- Resource Index
- 19/100
- Enrollment
- 600
- Students per teacher
- 20.7:1
- Resource Index
- 22/100
- Enrollment
- 560
- Students per teacher
- 21.5:1
- Resource Index
- 26/100
Similar elementary schools in San Clemente
6 comparable elementary schools (grades K-5) serving the same city.
Las Palmas Elementary
Standard public school
743 students 24.8:1 students per teacher
Vista Del Mar Elementary
Standard public school
692 students 23.9:1 students per teacher
Truman Benedict Elementary
Standard public school
602 students 25.1:1 students per teacher
Concordia Elementary
Standard public school
533 students 26.6:1 students per teacher
Clarence Lobo Elementary
Standard public school
328 students 19.3:1 students per teacher
Marblehead Elementary
Standard public school
195 students 19.5:1 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 (~489 students)
Similar student-teacher ratio (~16.9:1)
Next steps
Verify locally before acting on San Onofre Elementary's federal record.
- Compare San Onofre Elementary against another school. Compare schools
- Fallbrook Union 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 San Onofre Elementary
How many students attend San Onofre Elementary?
San Onofre Elementary has 489 students enrolled. It is an elementary school in San Clemente, CA.
What is the student-teacher ratio at San Onofre Elementary?
The student-teacher ratio at San Onofre Elementary is 16.9:1, which is 21% lower than the California average of 21.5:1 and 8% 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 San Onofre Elementary?
17.1% of students at San Onofre Elementary are eligible for free lunch, compared to the California average of 55.5%.
What is the racial and ethnic makeup of San Onofre Elementary?
The largest demographic group at San Onofre Elementary is White at 47.0% of enrollment, in San Clemente, CA. Its student body is more racially and ethnically mixed than most US schools, with a diversity index of 64.1/100.
What is the Resource Investment Index for San Onofre Elementary?
San Onofre Elementary has a Resource Investment Index of 32/100 (typical 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 San Onofre Elementary rank among elementary schools in San Clemente?
By Resource Investment Index, San Onofre Elementary ranks #3 of 7 elementary schools in San Clemente, 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 San Clemente on the city page.
Is San Onofre Elementary a good school?
San Onofre Elementary earns 32/100 on the Resource Investment Index, with class sizes smaller than 84% 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 Fallbrook Union Elementary?
Besides San Onofre Elementary, Fallbrook Union Elementary also operates James E. Potter Intermediate (828 students), Mary Fay Pendleton Elementary (820 students), and Live Oak Elementary (717 students). See the Fallbrook Union 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.