- Enrollment
- 736
- Students per teacher
- 26.3:1
- Resource Index
- 48/100
Elementary school (grades K-5) · Ontario, CA
Mariposa Elementary
Federal NCES profile for Mariposa Elementary, including enrollment, faculty, free-lunch eligibility, demographics, and resource indicators - Resource Investment Index 25/100.
2024-25 NCES dataElementary school (grades K-5)NCES 062847004406
👥 S:T ratio 17
🌟 Gifted program 70
🎓 Counselors 0
📋 Attendance 14
Scored 0–100 from federal NCES and CRDC indicators, resource allocation, not test scores. Full methodology →
The verdict
Mariposa Elementary earns 25/100 on the Resource Investment Index, with class sizes near the California median.
- #18 of 26
- elementary schools in Ontario · Resource Index
- 25
- Resource Index · Lower
- 20.7:1
- students per teacher
- 77.3%
- free-lunch eligible
Mariposa Elementary has class sizes near the California median. Computed live against every California school reporting to NCES.
By Resource Investment Index, Mariposa Elementary ranks #18 of 26 elementary schools in Ontario, CA.
School address
District: Ontario-Montclair · California
NCES ID 062847004406 Verify on NCES CCD record →
CCD year-over-year · 2022-23 → 2023-24
-24 students YoY
Mariposa Elementary held near 567 students from 2022-23 to 2023-24 (-24 headcount).
Teacher FTE held 26.1 → 26.0 across the same CCD years.
Source: NCES Common Core of Data public-school universe (2022-23, 2023-24).
Steady CCD campus
-24 students YoY 062847004406 · Ontario, CA Elementary · MID · TRAD
537 enr · 20.7:1 · 77.3% lunch · RII 25
Nearest enrollment peer: Edison Elementary (736 students)
Mariposa Elementary held near 567 students from 2022-23 to 2023-24 (-24 headcount). Teacher FTE held 26.1 → 26.0 across the same CCD years. Read with this school → · District book → · California schools → · Find another →
Mariposa Elementary in the enrollment neighbourhood
Fall enrollment among this campus and nearest district peers
- Edison Element
Edison Elementary
736 students
- Central Langua
Central Language Academy
736 students
- Ray Wiltsey Mi
Ray Wiltsey Middle
727 students
- Oaks Middle
Oaks Middle
668 students
- Serrano Middle
Serrano Middle
657 students
- This school
Mariposa Elementary
537 students
What this shows Mariposa Elementary reports 537 students on the CCD universe file.
How Mariposa Elementary compares
Mariposa 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 | 20.7:1 | ▼ 4% | 21.5:1 | 15.7:1 |
| Free-lunch eligible | 77.3% | ▲ 39% | 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
20.7:1
Leaner classes than 14% 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
77.3%
free-lunch eligible
- 39% 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
20.7:1
students per teacher
- 4% below state mean
Top 41% in California - lower ratio than 59% of state schools
Above 20:1, running heavier than the typical U.S. public school; staffing is comparatively stretched.
Engagement
34.3%
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
$21,832
per pupil, district-wide
- above California avg of $18,665
Well above the U.S. public-school average, reflecting substantially higher local or state investment per enrolled student.
Support staff
Counselors1.0 FTE
Per 537 students, the combined health-and-guidance staffing load for this school.
Discipline context
0
in-school suspensions + 6 out-of-school
Suspension rate: 0.0 per 100 students. Combined in-school and out-of-school rate: 1.1 per 100 students. Reported via the Civil Rights Data Collection.
Student demographics
Hispanic or Latino 85.7%
African American 9.9%
White 2.0%
Asian 1.3%
Two or More 0.7%
American Indian / Alaska Native 0.4%
Largest group: Hispanic or Latino at 85.7% of enrollment.
Student-body diversity index 25.5/100
Simpson diversity index - at 25.5, Mariposa Elementary is less mixed than the California school average of 46.0.
Programs
Gifted & talented Yes
District finance for Ontario-Montclair reports $21,832 per pupil (NCES F-33) - open the district page for the full revenue mix.
How Mariposa Elementary Compares to District-Mates
| School | Enrollment | Economic Profile | Student-Teacher Ratio |
|---|---|---|---|
| Edison Elementary | Larger | Lower economic need | Higher S:T ratio |
| Central Language Academy | Larger | Lower economic need | Higher S:T ratio |
| Ray Wiltsey Middle | Larger | Similar economic need | Lower S:T ratio |
| Oaks Middle | Similar size | Lower economic need | Similar S:T ratio |
| Serrano Middle | Similar size | Similar economic need | Lower S:T ratio |
Comparisons are relative to Mariposa Elementary's own figures; each column derives from NCES Common Core of Data.
Other Schools in This District
- Enrollment
- 736
- Students per teacher
- 25.4:1
- Resource Index
- 27/100
- Enrollment
- 727
- Students per teacher
- 18.2:1
- Resource Index
- 36/100
- Enrollment
- 668
- Students per teacher
- 21.5:1
- Resource Index
- 21/100
- Enrollment
- 657
- Students per teacher
- 17.3:1
- Resource Index
- 34/100
Similar elementary schools in Ontario
6 comparable elementary schools (grades K-5) serving the same city.
Park View Elementary
Standard public school
844 students 25.6:1 students per teacher
Ranch View Elementary
Standard public school
738 students 30.8:1 students per teacher
Edison Elementary
Standard public school
736 students 26.3:1 students per teacher
Central Language Academy
Standard public school
736 students 25.4:1 students per teacher
Richard Haynes Elementary
Standard public school
641 students 21.4:1 students per teacher
Berlyn Elementary
Standard public school
639 students 22:1 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 Mariposa Elementary
How many students attend Mariposa Elementary?
Mariposa Elementary has 537 students enrolled. It is an elementary school in Ontario, CA. CCD year-over-year: 591 (2022-23) → 567 (2023-24), nearly flat (-24).
What is the student-teacher ratio at Mariposa Elementary?
The student-teacher ratio at Mariposa Elementary is 20.7:1, which is 4% lower than the California average of 21.5:1 and 32% 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 Mariposa Elementary?
77.3% of students at Mariposa Elementary are eligible for free lunch, compared to the California average of 55.5%.
What is the racial and ethnic makeup of Mariposa Elementary?
The largest demographic group at Mariposa Elementary is Hispanic or Latino at 85.7% of enrollment, in Ontario, CA.
What is the Resource Investment Index for Mariposa Elementary?
Mariposa Elementary has a Resource Investment Index of 25/100 (lower reported resources relative to schools nationally) based on 4 factors: student-teacher ratio, gifted-program reporting, counselor availability, chronic absenteeism. Not a test-score or academic measure (national median ~41/100, see methodology).
How does Mariposa Elementary rank among elementary schools in Ontario?
By Resource Investment Index, Mariposa Elementary ranks #18 of 26 elementary schools in Ontario, 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 Ontario on the city page.
What other schools are in Ontario-Montclair?
Besides Mariposa Elementary, Ontario-Montclair also operates Edison Elementary (736 students), Central Language Academy (736 students), and Ray Wiltsey Middle (727 students). See the Ontario-Montclair district page for the complete list.