Enrollment
585
California · 2024-25 NCES data
Elementary school (grades K-5) · Ontario, CA
Ontario Center
Federal NCES profile for Ontario Center, including enrollment, faculty, free-lunch eligibility, demographics, and resource indicators - Resource Investment Index 26/100.
2024-25 NCES dataElementary school (grades K-5)NCES 061630009841
👥 S:T ratio 6
🌟 Gifted program 70
📋 Attendance 2
Scored 0–100 from federal NCES and CRDC indicators, resource allocation, not test scores. Full methodology →
The verdict
Ontario Center earns 26/100 on the Resource Investment Index, with class sizes near the California median.
- #15 of 26
- elementary schools in Ontario · Resource Index
- 26
- Resource Index · Lower
- 23.4:1
- students per teacher
- 54.7%
- free-lunch eligible
Ontario Center has class sizes near the California median. Computed live against every California school reporting to NCES.
By Resource Investment Index, Ontario Center ranks #15 of 26 elementary schools in Ontario, CA.
School address
District: Cucamonga Elementary · California
NCES ID 061630009841 Verify on NCES CCD record →
Teachers (FTE)
25.0
Federal CCD staff survey
Students per teacher
23.4:1
vs 21.5:1 California avg
+9% vs state
Free-lunch eligible
54.7%
vs 55.5% California avg
-1% vs state
Student-teacher ratio in context
How Ontario Center compares with California and U.S. medians
What stands out at Ontario Center
Ontario Center is a higher-need, mid-sized elementary school in Ontario, California, enrolling 585 students.
Class loads run somewhat heavier than typical: 23.4:1 puts it in the larger third of California schools by student-teacher ratio.
Its free-meal eligibility rate of 54.7% lands close to the California typical range, neither a high- nor low-need campus by this measure.
Enrollment of 585 puts it in the larger third of California schools by headcount.
Its Resource Investment Index lands in the lower third of 9,998 scored California schools.
Against 1,653 statewide peers matched on enrollment and economic need, it ranks mid-pack at #771.
Its student body is led by Hispanic or Latino (52%) and African American (24%) (diversity index 65/100).
Chronic absenteeism is elevated: 39.1% of students missed 10% or more of school days (2021-22 Civil Rights Data Collection).
Among Ontario's elementary schools, it stands alongside Park View Elementary (844 students): Ontario Center is smaller than that campus by headcount and runs leaner classes (23.4:1 vs 25.6:1).
Cucamonga Elementary also operates Rancho Cucamonga Middle (770 students) and Los Amigos Elementary (550 students) alongside Ontario Center.
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 Ontario Center compares
Ontario Center on the metrics families compare, against California and U.S. means.
| Metric | This school | vs California | California avg | U.S. avg |
|---|---|---|---|---|
| Students per teacher | 23.4:1 | ▲ 9% | 21.5:1 | 15.7:1 |
| Free-lunch eligible | 54.7% | ▼ 1% | 55.5% | 51.7% |
| Enrollment | 585 | top 34% | - | - |
Source: NCES Common Core of Data School-level CCD + state/national means from Public School Universe · 2024-25
23.4:1
Leaner classes than 7% of US schools, heavier class loads than most.
585
Bigger than 71% of US schools by enrollment, mid-sized for the country.
Equity indicators (what these measure)
Economic need
54.7%
free-lunch eligible
- 1% below the California average of 55.5%
Above the 40% Title I schoolwide threshold; federal funds support the whole school, not individual students.
Staffing depth
23.4:1
students per teacher
- 9% above state mean
Top 66% in California - lower ratio than 34% of state schools
Above 20:1, running heavier than the typical U.S. public school; staffing is comparatively stretched.
Engagement
39.1%
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
$17,081
per pupil, district-wide
- above 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 + 11 out-of-school
Suspension rate: 0.0 per 100 students. Combined in-school and out-of-school rate: 1.9 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 52.0%
African American 23.8%
White 10.6%
Two or More 6.5%
Asian 6.2%
Native Hawaiian / Pacific Islander 1.0%
Largest group: Hispanic or Latino at 52.0% of enrollment.
Student-body diversity index 65.4/100
Simpson diversity index - at 65.4, Ontario Center is more mixed than the California school average of 46.0.
Programs
Gifted & talented Yes
Funding & spending
District-wide per-pupil expenditure for Cucamonga Elementary, which includes Ontario Center.
$17,081
Per student
+3%
vs California
Avg $16,509
+3%
vs U.S.
Avg $16,593
Revenue mix
Local 76.4%
State 13.3%
Federal 10.3%
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 Ontario Center Compares to District-Mates
| School | Enrollment | Economic Profile | Student-Teacher Ratio |
|---|---|---|---|
| Rancho Cucamonga Middle | Larger | Similar economic need | Lower S:T ratio |
| Los Amigos Elementary | Similar size | Similar economic need | Lower S:T ratio |
| Cucamonga Elementary | Similar size | Similar economic need | Lower S:T ratio |
Comparisons are relative to Ontario Center's own figures; each column derives from NCES Common Core of Data.
Other Schools in This District
- Enrollment
- 770
- Students per teacher
- 17.5:1
- Resource Index
- 28/100
- Enrollment
- 550
- Students per teacher
- 20.4:1
- Resource Index
- 16/100
- Enrollment
- 452
- Students per teacher
- 19.7:1
- 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
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 (~585 students)
Similar student-teacher ratio (~23.4:1)
Next steps
Verify locally before acting on Ontario Center's federal record.
- Compare Ontario Center against another school. Compare schools
- Cucamonga 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 Ontario Center
How many students attend Ontario Center?
Ontario Center has 585 students enrolled. It is an elementary school in Ontario, CA.
What is the student-teacher ratio at Ontario Center?
The student-teacher ratio at Ontario Center is 23.4:1, which is 9% higher than the California average of 21.5:1 and 49% higher than the national average of 15.7:1.
What percentage of students receive free lunch at Ontario Center?
54.7% of students at Ontario Center are eligible for free lunch, compared to the California average of 55.5%.
What is the racial and ethnic makeup of Ontario Center?
The largest demographic group at Ontario Center is Hispanic or Latino at 52.0% of enrollment, in Ontario, CA. Its student body is more racially and ethnically mixed than most US schools, with a diversity index of 65.4/100.
What is the Resource Investment Index for Ontario Center?
Ontario Center has a Resource Investment Index of 26/100 (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 Ontario Center rank among elementary schools in Ontario?
By Resource Investment Index, Ontario Center ranks #15 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.
Is Ontario Center a good school?
Ontario Center earns 26/100 on the Resource Investment Index, with class sizes near the California median. 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 Cucamonga Elementary?
Besides Ontario Center, Cucamonga Elementary also operates Rancho Cucamonga Middle (770 students), Los Amigos Elementary (550 students), and Cucamonga Elementary (452 students). See the Cucamonga 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.