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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

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 metrics
Student Progress8.6Excellent25%
Year-over-year improvement in student test scores.
View breakdown
Years of Data3
Annual Change+0.36 pts/yr
Data Period2019–2024
TrendStable
Academics8.1Excellent25%
Student proficiency on state tests, adjusted for community poverty levels.
View breakdown
Math Proficiency20.1%
Reading/ELA Proficiency61.9%
Math vs. State Avg-7.9 pts
Reading vs. State Avg+6 pts
Overall Proficiency41%
Expected (poverty-adj.)25%
vs. Expected+16.1 pts
Adjusted Percentile72th
College Readiness4.1Below Average30%
Graduation rates, AP course participation, and IB availability.
View breakdown
AP Participation16.2%
IB ProgramNo
Resources & Environment6.2Above Average20%
Student-teacher ratio, per-pupil spending, and attendance.
View breakdown
Student-Teacher Ratio22.3:1
Per-Pupil Spending$15,468

Ontario High — Students at Ontario High score 41% proficient, which is above what's typical for similar communities (expected: 25%).

How we calculate scores →

Equity & Diversity

Shown separately, not included in overall score

Free/Reduced Lunch

87.4%

Students qualifying for federal meal assistance

Test Scores CA CAASPP (2023-24)

Math Proficiency 24.0%
School
State
31.8%
ELA Proficiency 57.7%
School
State
51.5%

Based on 8 test records from CA state assessments. About our data

Proficiency Trend

→ Stable

Average proficiency (% at or above grade level) across Math & ELA over time.

2019
Math
27%
ELA
51%
2021*
Math
29%
ELA
56%
2024
Math
20.1%
ELA
61.9%

* 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.

Overall Score
6.6/10
57th percentile in CA
Academic
8.1/10
8.1/10
Growth
8.6/10
Above average
Environment
6.2/10
Above average

Funding & Resources

Free/Reduced Lunch
Students eligible for subsidized meals
87%
Teaching Staff
22:1 student-teacher ratio
95 teachers

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.

11 schools nearby View map →

Neighborhood Context

Walk Score
52 Somewhat Walkable
Transit Score
23 Minimal Transit
Bike Score
48 Somewhat Bikeable
City Safety
High (2,102/100K)

Powered by Walk Score

FBI UCR 2024. City-level (Ontario). Data >1 year old.

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
Data Year
2023–2024

District

Chaffey Joint Union High
District Enrollment
22,628
Schools in District
11
Per-Pupil Spending
$16,769
District Rank
#5 of 10

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.

Read our full methodology

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