SchoolRow
#504

Ontario High

Ontario, CA · Chaffey Joint Union High · Grades 9-12

504th of 1,528 California high schools statewide · better than 67%· Stable

2,121
Students
2023–24 enrollment
22.3:1
Student / teacher ratio
87%
Free / reduced-price lunch
low-income indicator
25.0%
Chronically absent
CA average 20%

Ontario High ranking

SchoolRow ranks Ontario High 504th of 1,528 California high schools for 2024–25, based on CAASPP 2024–25 English and Math results — better than 67% of high schools statewide. Its statewide percentile went from 67th in 2015 to 67th in 2025.

Statewide percentile by year
25%50%75%67%201520202025no testing 2020–21

Ontario High test scores

Percent meeting or exceeding the state standard, CAASPP 2024–25 · 495 students tested

English Language Arts
This school
63%
CA average
49%
Math
This school
30%
CA average
37%
Science
This school
20%
CA average
33%
English Language Arts over time this school CA average
25%50%75%63%49%201520202025no testing 2020–21
Math over time this school CA average
25%50%75%30%37%201520202025no testing 2020–21

Ontario High students

Racial and ethnic breakdown of 2,121 students (202324, NCES) — and how it has shifted since 2013

Hispanic89%
Hover the pie for details
Hispanic 89%90%20132023
GroupTrend20132023Change
Hispanic89.5%88.7% 0.8 pts
Asian2.1%3.5% 1.4 pts
White3.9%2.5% 1.4 pts
Black3.1%2.2% 0.9 pts
Two or more races0.8%1.7% 0.9 pts
American Indian0.3%0.9% 0.6 pts

Homes near Ontario High

Typical home value $683K in zip 91762 as of 2026-05 · trend since 2000

$179K$358K$538K$717K$683K200020052010201520202025

Data Provided by Zillow Group

See recently sold homes in 91762 on Zillow →

High schools near Ontario High

Closest same-level schools, with 2024–25 state rank

View on the map →

Frequently asked questions

What school district is Ontario High in?

Ontario High is part of the Chaffey Joint Union High district in Ontario, California.

Is Ontario High a good school?

SchoolRow ranks Ontario High 504th of 1,528 California high schools (better than 67% statewide) based on 2024–25 test results (CAASPP 2024–25).

What is the racial makeup of Ontario High?

Hispanic 89%, Asian 4%, White 3%, Black 2% (2,121 students, 2023–24).

How much do homes near Ontario High cost?

The typical home value in zip code 91762 is $683K as of 2026-05 (Zillow ZHVI).

Sources: state education department data (CAASPP 2024–25, low-income, chronic absenteeism), National Center for Education Statistics via the Urban Institute (enrollment, demographics, staffing), Zillow Group (home values). Rankings are computed by SchoolRow from state English and Math results within grade level; they measure test performance, not everything that makes a school good.