Very Good
#3438 of 9,539 schools in CA
Top 36% in state
Ontario High
High School · Chaffey Joint Union High
901 West Francis St., Ontario, CA 91762
Enrollment
2,121
Student-Teacher
22.3:1
Score
7.0
Grades
9th – 12th
Enrollment
2,121
Student-Teacher
22.3:1
Score
7.0
Grades
9th – 12th
Data vintage
2022-23
Data vintage2022-23
How this school compares
California schools
#3,438 of 9,539
In Ontario
#16 of 37
public schools
In district
#6 of 10
Chaffey Joint Union High
Academic growth
8.2 / 10
Excellent
Shortlisting around Ontario High?
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Ontario High
High School in Ontario · grades 9th – 12th. Start here, then compare fit against nearby and district options.
Richard Haynes Elementary
0.2 mi away. Use as a geographic alternative in the same move search.
Ontario Christian School
0.5 mi away. Use as a geographic alternative in the same move search.
About Ontario High
Ontario High is a public high school in Ontario, CA, part of Chaffey Joint Union High. Ontario High serves approximately 2,121 students, and covers grades 9th-12th, and has a 22.3:1 student-teacher ratio. Ontario High has a current MySchoolScout rating of 7.0 out of 10 and ranks #3,438 of 9,539 schools in CA.
Structured state assessment records for Ontario High show 37% math proficiency (multi-year average, 2009-2024) and 55% reading/ELA proficiency (multi-year average, 2009-2024).
- This school 7.0 · Very Good
- District avg 7.1
- CA avg 6.5
What Parents Should Know
Ontario High is a large school: 2,121 students. Size usually brings more course choices and activities than a smaller school can staff, but kids can also blend into the crowd. Ask how the school keeps students known and supported.
Ontario High runs 22.3:1 students to teachers, above the national average. That often means bigger classes. Ask how the school supports kids who need extra help, and whether there are teaching assistants or small-group time.
30% of students at Ontario High were chronically absent in the 2022-23 school year, above the national average. Chronic absenteeism means missing 15 or more school days, and at high rates it drags on classroom pacing for everyone. Ask what the school does to help families get kids to class consistently.
Score Breakdown
Full Profile · 4/4 metricsView breakdown
View breakdown
View breakdown
View breakdown
Ontario High — Students at Ontario High score 41% proficient, which is above what's typical for similar communities (expected: 25%).
Equity & Diversity
Shown separately, not included in overall scoreFree/Reduced Lunch
87.4%
Students qualifying for federal meal assistance
Test Scores CA CAASPP (2023-24)
Based on 30 test records from CA state assessments. About our data
Proficiency Trend
→ StableAverage proficiency (% at or above grade level) across Math & ELA over time.
* COVID-affected year — test participation was uneven nationwide. This data is weighted at 50% in the Growth score calculation.
Source: EdFacts (NCES) and state assessment data. Growth score: 8.2/10.
How Ontario High Compares
See how Ontario High performs across key quality dimensions compared to state benchmarks.
Funding & Resources
Programs & Offerings
Data as of 2021-22 · Source: CRDC via Urban Institute · Learn more
Location
901 West Francis St., Ontario, CA 91762
Nearby Alternatives
Families considering Ontario High may also want to explore other high schools in the area. Vista Grande Elementary (rated 8.8/10, 0.6 miles away), which scores notably higher. Another option is Oaks Middle (rated 8.4/10, 1.0 miles away), which scores notably higher. Additionally, De Anza Middle (rated 8.4/10, 1.2 miles away), which scores notably higher. For more schools in Ontario, see our Ontario schools guide .
Nearby Schools
20 within 1.8 mi| School | Distance | Rating |
|---|---|---|
| Richard Haynes Elementary Ontario | 0.2 mi | 6.9 |
| ONTARIO CHRISTIAN SCHOOL Ontario | 0.5 mi | 4.4 |
| Vista Grande Elementary Ontario | 0.6 mi | 8.8 |
| Oaks Middle Ontario | 1.0 mi | 8.4 |
| ONTARIO CHRISTIAN SCHOOL Ontario | 1.0 mi | 5.0 |
| Euclid Elementary Ontario | 1.2 mi | 7.2 |
| Alicia Cortez Elementary Chino | 1.3 mi | 5.4 |
| De Anza Middle Ontario | 1.2 mi | 8.4 |
| MOUNT ZION CHRISTIAN SCHOOL Ontario | 1.3 mi | — |
| CHRIST LUTHERAN PRESCHOOL AND KINDERGARTEN Chino | 1.2 mi | — |
| Sultana Elementary Ontario | 1.2 mi | 8.0 |
| Mission Elementary Ontario | 1.3 mi | 6.9 |
| Walnut Avenue Elementary Chino | 1.4 mi | 5.5 |
| ORION INTERNATIONAL ACADEMY Ontario | 1.4 mi | 7.1 |
| Kraft Academy Ontario | 1.7 mi | — |
| Hunter Academies Ontario | 1.5 mi | — |
| Chino High Chino | 1.6 mi | 6.3 |
| Magnolia Junior High Chino | 1.8 mi | 6.8 |
| AMERICAN CHRISTIAN MILITARY ACADEMY OF EXCELLENCE Claremont | 1.8 mi | — |
| Allegiance STEAM Academy - Thrive Chino | 1.8 mi | 3.7 |
Neighborhood Census ACS (2019-2023)
Census data for ZIP 91762 (ACS 2019-2023 5-Year Estimates) · Data sources
Median Income
$76,289
Median Home Value
$568,700
Median Rent
$1,752/mo
Population
63,656
College Educated
21.3%
Homeownership
58.4%
Avg Commute
31.4 min
Poverty Rate
12.9%
Median Age
33.9
Similar Schools
Schools in the same state with comparable level, size, and ratings
| School | Rating |
|---|---|
| Agoura High Agoura, CA | 7.0 |
| El Modena High Orange, CA | 7.0 |
| Glendora High Glendora, CA | 7.0 |
| Hawthorne High Hawthorne, CA | 7.0 |
| John F. Kennedy High Fremont, CA | 7.0 |
| Martin Luther King Jr. High Riverside, CA | 7.0 |
Frequently Asked Questions
Common questions about Ontario High
What grades does Ontario High serve?
Ontario High serves students in grades 9th through 12th.
How many students attend Ontario High?
Ontario High has an enrollment of approximately 2,121 students.
What is the student-teacher ratio at Ontario High?
The student-teacher ratio at Ontario High is 22.3:1. A lower ratio generally means more individual attention per student. The national average is approximately 16:1 for public schools.
How does Ontario High rank in CA?
Ontario High ranks #3,438 of 9,539 schools in CA.
What is Ontario High's MySchoolScout rating?
Ontario High has a current MySchoolScout rating of 7.0 out of 10. This score combines the level-appropriate components shown in the rating breakdown; equity data is shown separately for context.
What are the test scores at Ontario High?
Based on loaded state assessment records, Ontario High has 37% math proficiency (multi-year average, 2009-2024) and 55% reading/ELA proficiency (multi-year average, 2009-2024).
Is Ontario High a charter school?
No, Ontario High is not a charter school. It is a traditional public school operated by the local school district.
Is Ontario High a Title I school?
No, Ontario High is not currently a Title I school.
What does the Free & Reduced Lunch percentage mean for Ontario High?
87.4% of students at Ontario High qualify for free or reduced-price lunch. This is a commonly used indicator of economic need and provides important context when interpreting test scores.
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Neighborhood Context
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Quick Facts NCES CCD (SY 2022-23)
- Grades
- 9th – 12th
- Enrollment
- 2,121
- Student-Teacher Ratio
- 22.3:1
- Teachers (FTE)
- 95
- Free/Reduced Lunch
- 87.4%
- Type
- regular
- Setting
- Midsize City
- County
- San Bernardino County
- Chronic Absenteeism (SY 2022-23)
- 30.4%
- Phone
- (909) 988-7411
- 4-Year Graduation
- 91.0%
Resources & Links
District
Chaffey Joint Union High- District Enrollment
- 22,628
- Schools in District
- 11
- Per-Pupil Spending
- $16,769
- District Rank
- #6 of 10
Other Schools in This District
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