Enrollment
93
California · 2024-25 NCES data
High school (grades 9-12) · Ontario, CA
Chaffey District Online High
Federal NCES profile for Chaffey District Online High, including enrollment, faculty, free-lunch eligibility, demographics, and resource indicators - Resource Investment Index 35/100.
2024-25 NCES dataHigh school (grades 9-12)NCES 060816013110
👥 S:T ratio 26
📚 AP courses 10
🌟 Gifted program 70
🎓 Counselors 63
📋 Attendance 8
Scored 0–100 from federal NCES and CRDC indicators, resource allocation, not test scores. Full methodology →
The verdict
Chaffey District Online High earns 35/100 on the Resource Investment Index, with class sizes smaller than 75% of California schools.
- #3 of 6
- high schools in Ontario · Resource Index
- 35
- Resource Index · Typical
- 18.6:1
- small classes for California
- 43.1%
- free-lunch eligible
Chaffey District Online High has class sizes smaller than 75% of California schools. Computed live against every California school reporting to NCES.
By Resource Investment Index, Chaffey District Online High ranks #3 of 6 high schools in Ontario, CA.
School address
District: Chaffey Joint Union High · California
NCES ID 060816013110 Verify on NCES CCD record →
Teachers (FTE)
5.0
Federal CCD staff survey
Students per teacher
18.6:1
vs 21.5:1 California avg
-13% vs state
Free-lunch eligible
43.1%
vs 55.5% California avg
-22% vs state
Student-teacher ratio in context
How Chaffey District Online High compares with California and U.S. medians
What stands out at Chaffey District Online High
Chaffey District Online High is a small high school in Ontario, California, enrolling 93 students.
Class sizes run a bit leaner than typical: 18.6:1 puts it in the smaller third of California schools by student-teacher ratio.
Economic need runs somewhat below the state's typical profile, with 43.1% of students eligible for free meals.
Enrollment of 93 puts it in the smaller third of California schools by headcount.
Its Resource Investment Index lands in the upper third of 9,998 scored California schools.
Against 210 statewide peers matched on enrollment and economic need, it ranks in the upper tier at #63.
Its student body is led by Hispanic or Latino (59%) and White (24%) (diversity index 58/100).
No Advanced Placement courses are reported for this campus in the federal data.
Counselor coverage is strong, about 186 students per counselor, inside the American School Counselor Association's recommended 250:1.
Chronic absenteeism is elevated: 36.6% of students missed 10% or more of school days (2021-22 Civil Rights Data Collection).
Among Ontario's high schools, it stands alongside Chaffey High (3,127 students): Chaffey District Online High is smaller than that campus by headcount and runs leaner classes (18.6:1 vs 22.8:1).
Chaffey Joint Union High also operates Etiwanda High (3,446 students) and Rancho Cucamonga High (3,221 students) alongside Chaffey District Online High.
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 Chaffey District Online High compares
Chaffey District Online High on the metrics families compare, against California and U.S. means.
| Metric | This school | vs California | California avg | U.S. avg |
|---|---|---|---|---|
| Students per teacher | 18.6:1 | ▼ 13% | 21.5:1 | 15.7:1 |
| Free-lunch eligible | 43.1% | ▼ 22% | 55.5% | 51.7% |
| Enrollment | 93 | top 90% | - | - |
Source: NCES Common Core of Data School-level CCD + state/national means from Public School Universe · 2024-25
18.6:1
Leaner classes than 22% of US schools, heavier class loads than most.
93
Bigger than 9% of US schools by enrollment, a small campus.
Equity indicators (what these measure)
Economic need
43.1%
free-lunch eligible
- 22% 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
18.6:1
students per teacher
- 13% below state mean
Top 25% in California - lower ratio than 75% of state schools
Between 16:1 and 20:1, squarely in the typical U.S. public-school staffing range.
Engagement
36.6%
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
$15,404
per pupil, district-wide
- below California avg of $16,509
Somewhat below the U.S. average per-pupil spend; funding constraints may affect programs, facilities, and staffing.
Support staff
Counselors0.5 FTE
Student-support staffing from the Civil Rights Data Collection.
Discipline context
0
in-school suspensions + 0 out-of-school
Suspension rate: 0.0 per 100 students. Combined in-school and out-of-school rate: 0.0 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 59.1%
White 23.7%
Asian 6.5%
Two or More 6.5%
African American 4.3%
Largest group: Hispanic or Latino at 59.1% of enrollment.
Student-body diversity index 58.4/100
Simpson diversity index - at 58.4, Chaffey District Online High is more mixed than the California school average of 46.0.
Programs
AP program Not offered
Gifted & talented Yes
Funding & spending
District-wide per-pupil expenditure for Chaffey Joint Union High, which includes Chaffey District Online High.
$15,404
Per student
-7%
vs California
Avg $16,509
-7%
vs U.S.
Avg $16,593
Revenue mix
Local 35.9%
State 52.9%
Federal 11.2%
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 Chaffey District Online High Compares to District-Mates
| School | Enrollment | Economic Profile | Student-Teacher Ratio |
|---|---|---|---|
| Etiwanda High | Larger | Similar economic need | Higher S:T ratio |
| Rancho Cucamonga High | Larger | Lower economic need | Higher S:T ratio |
| Chaffey High | Larger | Higher economic need | Higher S:T ratio |
| Los Osos High | Larger | Lower economic need | Higher S:T ratio |
| Montclair High | Larger | Higher economic need | Higher S:T ratio |
Comparisons are relative to Chaffey District Online High's own figures; each column derives from NCES Common Core of Data.
Other Schools in This District
- Enrollment
- 3,446
- Students per teacher
- 24.6:1
- Resource Index
- 28/100
- Enrollment
- 3,221
- Students per teacher
- 24.4:1
- Resource Index
- 31/100
- Enrollment
- 3,127
- Students per teacher
- 22.8:1
- Resource Index
- 30/100
- Enrollment
- 2,759
- Students per teacher
- 24.2:1
- Resource Index
- 28/100
- Enrollment
- 2,515
- Students per teacher
- 22.5:1
- Resource Index
- 36/100
Similar high schools in Ontario
5 comparable high schools (grades 9-12) serving the same city.
Chaffey High
Standard public school
3,127 students 22.8:1 students per teacher
Colony High
Standard public school
2,109 students 24.2:1 students per teacher
Ontario High
Standard public school
1,994 students 20.8:1 students per teacher
Valley View High (Continuation)
Alternative education program
370 students 14.8:1 students per teacher
Chaffey Community Day
Alternative education program
20 students 10:1 students per teacher
Similar high 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 (~93 students)
Similar student-teacher ratio (~18.6:1)
Next steps
Verify locally before acting on Chaffey District Online High's federal record.
- Compare Chaffey District Online High against another school. Compare schools
- Chaffey Joint Union High'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 Chaffey District Online High
How many students attend Chaffey District Online High?
Chaffey District Online High has 93 students enrolled. It is a high school in Ontario, CA.
What is the student-teacher ratio at Chaffey District Online High?
The student-teacher ratio at Chaffey District Online High is 18.6:1, which is 13% lower than the California average of 21.5:1 and 18% 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 Chaffey District Online High?
43.1% of students at Chaffey District Online High are eligible for free lunch, compared to the California average of 55.5%.
What is the racial and ethnic makeup of Chaffey District Online High?
The largest demographic group at Chaffey District Online High is Hispanic or Latino at 59.1% of enrollment, in Ontario, CA. Its student body is more racially and ethnically mixed than most US schools, with a diversity index of 58.4/100.
What is the Resource Investment Index for Chaffey District Online High?
Chaffey District Online High has a Resource Investment Index of 35/100 (typical reported resources relative to schools nationally) based on 5 factors: student-teacher ratio, counselor availability, attendance rates. Not a test-score or academic measure (national median ~41/100, see methodology).
How does Chaffey District Online High rank among high schools in Ontario?
By Resource Investment Index, Chaffey District Online High ranks #3 of 6 high 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 high schools in Ontario on the city page.
Is Chaffey District Online High a good school?
Chaffey District Online High earns 35/100 on the Resource Investment Index, with class sizes smaller than 75% 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 Chaffey Joint Union High?
Besides Chaffey District Online High, Chaffey Joint Union High also operates Etiwanda High (3,446 students), Rancho Cucamonga High (3,221 students), and Chaffey High (3,127 students). See the Chaffey Joint Union High 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.