Average
#4117 of 9,533 schools in CA
Top 43% 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
6.6
Grades
9th – 12th
Enrollment
2,121
Student-Teacher
22.3:1
Score
6.6
Grades
9th – 12th
Updated
2022-23
Updated 2022-23
How this school compares
In Ontario
#18 of 37
public schools
California high schools
#805 of 1,892
In district
#5 of 10
Chaffey Joint Union High
Academic growth
8.6 / 10
Exceptional
About Ontario High
Ontario High serves 2,121 students in grades 9-12 in Ontario, California, operating with a student-teacher ratio of 22.3:1 across 95 full-time equivalent teachers. This regular public high school ranks in the 63rd percentile among California high schools, placing it at #3549 out of 9,566 schools statewide with a 6.4 out of 10 rating. The school shows solid performance in English Language Arts, with 62% of students achieving proficiency or above across grade levels.
Mathematics presents an area with significant room for growth, as 20% of students currently demonstrate proficiency or above. These results reflect the school's ongoing focus on student development and academic improvement. Ontario High is situated in the 91762 ZIP code area, where the median household income is $74,245 and the median home value reaches $512,800.
The surrounding community has a 13.2% poverty rate, with 19% of residents holding a bachelor's degree or higher. The neighborhood serves a diverse population of nearly 63,000 residents. Located on West Francis Street, Ontario High operates within the mid-size city of Ontario in San Bernardino County, providing educational services to families in this established Southern California community.
What Parents Should Know
Ontario High is a large school with 2,121 students enrolled. Larger schools typically offer a wider range of academic programs, electives, and extracurricular activities. Parents may want to ask about how the school maintains a sense of community and ensures students don't get lost in the crowd.
The student-teacher ratio at Ontario High is 22.3:1, which is higher than the national average. This may mean larger class sizes, so parents should ask about classroom support, teaching assistants, and how the school differentiates instruction for students who need extra help.
Score Breakdown
Full Profile · 4/4 metricsView breakdown
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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 8 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: 8.6/10.
How Ontario High Compares
See how Ontario High performs across key quality dimensions compared to state benchmarks.
Funding & Resources
Performance Trends
Math proficiency has declined from 27% (2019) to 20.09% (2024). Reading/ELA proficiency has improved from 51% (2019) to 61.92% (2024).
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. De Anza Middle (rated 8.8/10, 1.2 miles away), which scores notably higher. Another option is Vista Grande Elementary (rated 7.9/10, 0.6 miles away), which scores notably higher. Additionally, Oaks Middle (rated 7.3/10, 1.0 miles away), which scores slightly 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 | 7.2 |
| ONTARIO CHRISTIAN SCHOOL Ontario | 0.5 mi | 4.5 |
| Vista Grande Elementary Ontario | 0.6 mi | 7.9 |
| Oaks Middle Ontario | 1.0 mi | 7.3 |
| ONTARIO CHRISTIAN SCHOOL Ontario | 1.0 mi | 5.0 |
| Euclid Elementary Ontario | 1.2 mi | 6.0 |
| Alicia Cortez Elementary Chino | 1.3 mi | 5.7 |
| De Anza Middle Ontario | 1.2 mi | 8.8 |
| MOUNT ZION CHRISTIAN SCHOOL Ontario | 1.3 mi | — |
| CHRIST LUTHERAN PRESCHOOL AND KINDERGARTEN Chino | 1.2 mi | — |
| Sultana Elementary Ontario | 1.2 mi | 5.4 |
| Mission Elementary Ontario | 1.3 mi | 6.6 |
| Walnut Avenue Elementary Chino | 1.4 mi | 6.0 |
| 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 | 5.9 |
| Magnolia Junior High Chino | 1.8 mi | 7.2 |
| AMERICAN CHRISTIAN MILITARY ACADEMY OF EXCELLENCE Claremont | 1.8 mi | — |
| Allegiance STEAM Academy - Thrive Chino | 1.8 mi | 4.0 |
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
Community Profile
The community surrounding Ontario High has a median household income of $76,289. It is a community where 21% of adults hold a bachelor's degree or higher. The median home value in the area is $568,700, with a median rent of $1,752/month. The area has a poverty rate of 12.9%. The average commute for residents is 31 minutes. Source: U.S. Census ACS 2022 5-Year Estimates.
Similar Schools
Schools in the same state with comparable level, size, and ratings
| School | Rating |
|---|---|
| Ann Sobrato High Morgan Hill, CA | 6.6 |
| Benjamin Franklin Senior High Los Angeles, CA | 6.6 |
| Castro Valley High Castro Valley, CA | 6.6 |
| Compton High Compton, CA | 6.6 |
| Costa Mesa High Costa Mesa, CA | 6.6 |
| Independence High San Jose, CA | 6.6 |
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 is ranked #4117 out of 9,533 schools in CA.
What is Ontario High's MySchoolScout rating?
Ontario High has a composite rating of 6.6 out of 10 on MySchoolScout. This score combines academic performance, student growth, and school environment into a single score. Equity data is shown separately for context.
What are the test scores at Ontario High?
Based on the most recent state assessment data, Ontario High has 24.0% math proficiency and 57.7% reading/ELA proficiency.
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.
Explore More Schools
Neighborhood Context
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
- Phone
- (909) 988-7411
- Data Year
- 2023–2024
Resources & Links
District
Chaffey Joint Union High- District Enrollment
- 22,628
- Schools in District
- 11
- Per-Pupil Spending
- $16,769
- District Rank
- #5 of 10
Other Schools in This District
How We Rate Schools
Every school receives a composite score from 1 to 10 based on four pillars: Academic Performance (50%), Student Growth (20%), Equity (15%), and Learning Environment (15%). Scores are built from publicly available data including standardized test results, enrollment figures, and school climate indicators.
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