- Enrollment
- 2,623
- Students per teacher
- 22.2:1
- Resource Index
- 39/100
Elementary school (grades K-5) · Rialto, CA
W.J.C. Trapp Elementary
Federal NCES profile for W.J.C. Trapp Elementary, including enrollment, faculty, free-lunch eligibility, demographics, and resource indicators - Resource Investment Index 38/100.
2024-25 NCES dataElementary school (grades K-5)NCES 063237004999
👥 S:T ratio 0
🌟 Gifted program 70
📋 Attendance 43
Scored 0–100 from federal NCES and CRDC indicators, resource allocation, not test scores. Full methodology →
The verdict
W.J.C. Trapp Elementary earns 38/100 on the Resource Investment Index, with class sizes larger than 83% of California schools.
- #2 of 16
- elementary schools in Rialto · Resource Index
- 38
- Resource Index · Typical
- 25.6:1
- large classes for California
- 61.5%
- free-lunch eligible
W.J.C. Trapp Elementary has class sizes larger than 83% of California schools. Computed live against every California school reporting to NCES.
By Resource Investment Index, W.J.C. Trapp Elementary ranks #2 of 16 elementary schools in Rialto, CA.
School address
District: Rialto Unified · California
NCES ID 063237004999 Verify on NCES CCD record →
CCD year-over-year · 2022-23 → 2023-24
+6 students YoY
W.J.C. Trapp Elementary held near 543 students from 2022-23 to 2023-24 (+6 headcount).
Teacher FTE held 21.0 → 21.0 across the same CCD years.
Source: NCES Common Core of Data public-school universe (2022-23, 2023-24).
Steady CCD campus
+6 students YoY 063237004999 · Rialto, CA Elementary · MID · TRAD
537 enr · 25.6:1 · 61.5% lunch · RII 38
Nearest enrollment peer: Rialto High (2,623 students)
W.J.C. Trapp Elementary held near 543 students from 2022-23 to 2023-24 (+6 headcount). Teacher FTE held 21.0 → 21.0 across the same CCD years. Read with this school → · District book → · California schools → · Find another →
W.J.C. Trapp Elementary in the enrollment neighbourhood
Fall enrollment among this campus and nearest district peers
- Rialto High
Rialto High
2,623 students
- Eisenhower Hig
Eisenhower High
2,075 students
- Wilmer Amina C
Wilmer Amina Carter High
1,951 students
- William G. Jeh
William G. Jehue Middle
1,444 students
- Rialto Middle 1,017
Rialto Middle
1,017 students
- This school 537
W.J.C. Trapp Elementary
537 students
What this shows W.J.C. Trapp Elementary reports 537 students on the CCD universe file.
How W.J.C. Trapp Elementary compares
W.J.C. Trapp 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 | 25.6:1 | ▲ 19% | 21.5:1 | 15.7:1 |
| Free-lunch eligible | 61.5% | ▲ 11% | 55.5% | 51.7% |
| Enrollment | 537 | top 40% | - | - |
Source: NCES Common Core of Data School-level CCD + state/national means from Public School Universe · 2024-25
25.6:1
Leaner classes than 4% of US schools, heavier class loads than most.
537
Bigger than 66% of US schools by enrollment, mid-sized for the country.
Equity indicators methodology
Economic need
61.5%
free-lunch eligible
- 11% 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
25.6:1
students per teacher
- 19% above state mean
Top 83% in California - lower ratio than 17% of state schools
Well above 20:1, one of the more stretched staffing loads nationally relative to enrollment.
Engagement
22.7%
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
$18,123
per pupil, district-wide
- below California avg of $18,665
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
3
in-school suspensions + 9 out-of-school
Suspension rate: 0.6 per 100 students. Combined in-school and out-of-school rate: 2.2 per 100 students. Reported via the Civil Rights Data Collection.
Student demographics
Hispanic or Latino 86.4%
African American 6.3%
White 4.7%
Two or More 1.5%
Asian 1.1%
Largest group: Hispanic or Latino at 86.4% of enrollment.
Student-body diversity index 24.7/100
Simpson diversity index - at 24.7, W.J.C. Trapp Elementary is less mixed than the California school average of 46.0.
Programs
Gifted & talented Yes
District finance for Rialto Unified reports $18,123 per pupil (NCES F-33) - open the district page for the full revenue mix.
How W.J.C. Trapp Elementary Compares to District-Mates
| School | Enrollment | Economic Profile | Student-Teacher Ratio |
|---|---|---|---|
| Rialto High | Larger | Similar economic need | Lower S:T ratio |
| Eisenhower High | Larger | Higher economic need | Lower S:T ratio |
| Wilmer Amina Carter High | Larger | Similar economic need | Lower S:T ratio |
| William G. Jehue Middle | Larger | Similar economic need | Similar S:T ratio |
| Rialto Middle | Larger | Higher economic need | Lower S:T ratio |
Comparisons are relative to W.J.C. Trapp Elementary's own figures; each column derives from NCES Common Core of Data.
Other Schools in This District
- Enrollment
- 2,075
- Students per teacher
- 20.8:1
- Resource Index
- 32/100
- Enrollment
- 1,951
- Students per teacher
- 21:1
- Resource Index
- 33/100
- Enrollment
- 1,444
- Students per teacher
- 25.8:1
- Resource Index
- 23/100
- Enrollment
- 1,017
- Students per teacher
- 23.1:1
- Resource Index
- 27/100
Similar elementary schools in Rialto
6 comparable elementary schools (grades K-5) serving the same city.
Charlotte N. Werner Elementary
Standard public school
739 students 23.8:1 students per teacher
Sam V. Curtis Elementary
Standard public school
702 students 26:1 students per teacher
J.P. Kelley Elementary
Standard public school
661 students 24.5:1 students per teacher
Samuel W. Simpson Elementary
Standard public school
638 students 23.6:1 students per teacher
George H. Dunn Elementary
Standard public school
609 students 24.4:1 students per teacher
Helen L. Dollahan Elementary
Standard public school
608 students 24.3:1 students per teacher
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 (~537 students)
Frequently asked questions about W.J.C. Trapp Elementary
How many students attend W.J.C. Trapp Elementary?
W.J.C. Trapp Elementary has 537 students enrolled. It is an elementary school in Rialto, CA. CCD year-over-year: 537 (2022-23) → 543 (2023-24), nearly flat (+6).
What is the student-teacher ratio at W.J.C. Trapp Elementary?
The student-teacher ratio at W.J.C. Trapp Elementary is 25.6:1, which is 19% higher than the California average of 21.5:1 and 63% higher than the national average of 15.7:1.
What percentage of students receive free lunch at W.J.C. Trapp Elementary?
61.5% of students at W.J.C. Trapp Elementary are eligible for free lunch, compared to the California average of 55.5%.
What is the racial and ethnic makeup of W.J.C. Trapp Elementary?
The largest demographic group at W.J.C. Trapp Elementary is Hispanic or Latino at 86.4% of enrollment, in Rialto, CA.
What is the Resource Investment Index for W.J.C. Trapp Elementary?
W.J.C. Trapp Elementary has a Resource Investment Index of 38/100 (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 W.J.C. Trapp Elementary rank among elementary schools in Rialto?
By Resource Investment Index, W.J.C. Trapp Elementary ranks #2 of 16 elementary schools in Rialto, 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 Rialto on the city page.
What other schools are in Rialto Unified?
Besides W.J.C. Trapp Elementary, Rialto Unified also operates Rialto High (2,623 students), Eisenhower High (2,075 students), and Wilmer Amina Carter High (1,951 students). See the Rialto Unified district page for the complete list.