Enrollment
643
California · 2024-25 NCES data
Elementary school (grades K-5) · San Ysidro, CA
Willow Elementary
Federal NCES profile for Willow Elementary, including enrollment, faculty, free-lunch eligibility, demographics, and resource indicators - Resource Investment Index 27/100.
2024-25 NCES dataElementary school (grades K-5)NCES 063522012612
👥 S:T ratio 11
🌟 Gifted program 70
📋 Attendance 0
Scored 0–100 from federal NCES and CRDC indicators, resource allocation, not test scores. Full methodology →
The verdict
Willow Elementary earns 27/100 on the Resource Investment Index, with class sizes near the California median. It is also less racially and ethnically mixed than most California schools.
- #3 of 5
- elementary schools in San Ysidro · Resource Index
- 27
- Resource Index · Lower
- 22.2:1
- students per teacher
- 65.1%
- free-lunch eligible
Willow Elementary has class sizes near the California median. Computed live against every California school reporting to NCES.
By Resource Investment Index, Willow Elementary ranks #3 of 5 elementary schools in San Ysidro, CA.
School address
District: San Ysidro Elementary · California
NCES ID 063522012612 Verify on NCES CCD record →
Teachers (FTE)
29.0
Federal CCD staff survey
Students per teacher
22.2:1
vs 21.5:1 California avg
+3% vs state
Free-lunch eligible
65.1%
vs 55.5% California avg
+17% vs state
Student-teacher ratio in context
How Willow Elementary compares with California and U.S. medians
What stands out at Willow Elementary
Willow Elementary is a higher-need, mid-sized elementary school in San Ysidro, California, enrolling 643 students.
At 22.2:1, its student-teacher ratio sits close to the California median, within a few percentage points of the 21.5:1 state norm, neither notably crowded nor notably small.
Its free-meal eligibility rate of 65.1% lands close to the California typical range, neither a high- nor low-need campus by this measure.
Enrollment of 643 puts it in the larger third of California schools by headcount.
Its Resource Investment Index sits near the middle of the pack among 9,998 scored California schools.
Against 1,923 statewide peers matched on enrollment and economic need, it ranks in the upper tier at #716.
Its student body is predominantly Hispanic or Latino (97% of enrollment), among the less diverse in the state (diversity index 6/100).
Chronic absenteeism is elevated: 40.0% of students missed 10% or more of school days (2021-22 Civil Rights Data Collection).
Among San Ysidro's elementary schools, it stands alongside George Nicoloff Elementary (616 students): Willow Elementary is larger than that campus by headcount and runs leaner classes (22.2:1 vs 24.6:1).
San Ysidro Elementary also operates Ocean View Hills (1,020 students) and Vista Del Mar (541 students) alongside Willow 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 Willow Elementary compares
Willow 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 | 22.2:1 | ▲ 3% | 21.5:1 | 15.7:1 |
| Free-lunch eligible | 65.1% | ▲ 17% | 55.5% | 51.7% |
| Enrollment | 643 | top 28% | - | - |
Source: NCES Common Core of Data School-level CCD + state/national means from Public School Universe · 2024-25
22.2:1
Leaner classes than 10% of US schools, heavier class loads than most.
643
Bigger than 76% of US schools by enrollment, mid-sized for the country.
Equity indicators (what these measure)
Economic need
65.1%
free-lunch eligible
- 17% above the California average of 55.5%
Above the 40% Title I schoolwide threshold; federal funds support the whole school, not individual students.
Staffing depth
22.2:1
students per teacher
- 3% above state mean
Top 55% in California - lower ratio than 45% of state schools
Above 20:1, running heavier than the typical U.S. public school; staffing is comparatively stretched.
Engagement
40.0%
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
$16,263
per pupil, district-wide
- below California avg of $16,509
Close to the U.S. public-school average per-pupil spend.
Support staff
Counselors0.0 FTE
Student-support staffing from the Civil Rights Data Collection.
Discipline context
0
in-school suspensions + 34 out-of-school
Suspension rate: 0.0 per 100 students. Combined in-school and out-of-school rate: 5.3 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 96.7%
White 1.7%
Two or More 1.1%
African American 0.2%
Asian 0.2%
Native Hawaiian / Pacific Islander 0.2%
Largest group: Hispanic or Latino at 96.7% of enrollment.
Student-body diversity index 6.4/100
Simpson diversity index - at 6.4, Willow Elementary is less mixed than the California school average of 46.0.
Programs
Gifted & talented Yes
Funding & spending
District-wide per-pupil expenditure for San Ysidro Elementary, which includes Willow Elementary.
$16,263
Per student
-1%
vs California
Avg $16,509
-2%
vs U.S.
Avg $16,593
Revenue mix
Local 51.2%
State 36.0%
Federal 12.8%
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 Willow Elementary Compares to District-Mates
| School | Enrollment | Economic Profile | Student-Teacher Ratio |
|---|---|---|---|
| Ocean View Hills | Larger | Lower economic need | Higher S:T ratio |
| Vista Del Mar | Similar size | Lower economic need | Lower S:T ratio |
| Smythe Elementary | Similar size | Similar economic need | Lower S:T ratio |
| Sunset Elementary | Similar size | Similar economic need | Similar S:T ratio |
| San Ysidro Middle | Similar size | Similar economic need | Lower S:T ratio |
Comparisons are relative to Willow Elementary's own figures; each column derives from NCES Common Core of Data.
Other Schools in This District
- Enrollment
- 1,020
- Students per teacher
- 23.7:1
- Resource Index
- 40/100
- Enrollment
- 541
- Students per teacher
- 20:1
- Resource Index
- 52/100
- Enrollment
- 534
- Students per teacher
- 20.5:1
- Resource Index
- 29/100
- Enrollment
- 520
- Students per teacher
- 23.6:1
- Resource Index
- 25/100
- Enrollment
- 500
- Students per teacher
- 20:1
- Resource Index
- 30/100
Similar elementary schools in San Ysidro
4 comparable elementary schools (grades K-5) serving the same city.
George Nicoloff Elementary
Standard public school
616 students 24.6:1 students per teacher
Smythe Elementary
Standard public school
534 students 20.5:1 students per teacher
Sunset Elementary
Standard public school
520 students 23.6:1 students per teacher
La Mirada Elementary
Standard public school
382 students 16.6:1 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 (~643 students)
Similar student-teacher ratio (~22.2:1)
Next steps
Verify locally before acting on Willow Elementary's federal record.
- Compare Willow Elementary against another school. Compare schools
- San Ysidro 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 Willow Elementary
How many students attend Willow Elementary?
Willow Elementary has 643 students enrolled. It is an elementary school in San Ysidro, CA.
What is the student-teacher ratio at Willow Elementary?
The student-teacher ratio at Willow Elementary is 22.2:1, which is 3% higher than the California average of 21.5:1 and 41% higher than the national average of 15.7:1.
What percentage of students receive free lunch at Willow Elementary?
65.1% of students at Willow Elementary are eligible for free lunch, compared to the California average of 55.5%.
What is the racial and ethnic makeup of Willow Elementary?
The largest demographic group at Willow Elementary is Hispanic or Latino at 96.7% of enrollment, in San Ysidro, CA.
What is the Resource Investment Index for Willow Elementary?
Willow Elementary has a Resource Investment Index of 27/100 (lower reported resources relative to schools nationally) based on 3 factors: student-teacher ratio, attendance rates. Not a test-score or academic measure (national median ~41/100, see methodology).
How does Willow Elementary rank among elementary schools in San Ysidro?
By Resource Investment Index, Willow Elementary ranks #3 of 5 elementary schools in San Ysidro, 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 Ysidro on the city page.
Is Willow Elementary a good school?
Willow Elementary earns 27/100 on the Resource Investment Index, with class sizes near the California median. It is also less racially and ethnically mixed than most 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 San Ysidro Elementary?
Besides Willow Elementary, San Ysidro Elementary also operates Ocean View Hills (1,020 students), Vista Del Mar (541 students), and Smythe Elementary (534 students). See the San Ysidro 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.