SchoolRow
#748

Colony High

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

748th of 1,528 California high schools statewide · better than 51% Declining

2,085
Students
2023–24 enrollment
24:1
Student / teacher ratio
70%
Free / reduced-price lunch
low-income indicator
23.3%
Chronically absent
CA average 20%

Colony High ranking

SchoolRow ranks Colony High 748th of 1,528 California high schools for 2024–25, based on CAASPP 2024–25 English and Math results — better than 51% of high schools statewide. Its statewide percentile went from 66th in 2015 to 51th in 2025 — declining.

Statewide percentile by year
25%50%75%51%201520202025no testing 2020–21

Colony High test scores

Percent meeting or exceeding the state standard, CAASPP 2024–25 · 482 students tested

English Language Arts
This school
54%
CA average
49%
Math
This school
21%
CA average
37%
Science
This school
24%
CA average
33%
English Language Arts over time this school CA average
25%50%75%54%49%201520202025no testing 2020–21
Math over time this school CA average
25%50%75%21%37%201520202025no testing 2020–21

Colony High students

Racial and ethnic breakdown of 2,085 students (202324, NCES) — and how it has shifted since 2013

Hispanic68%7%9%Black11%
Hover the pie for details
Hispanic 68%White 7%Asian 9%Black 11%69%11%12%20132023
GroupTrend20132023Change
Hispanic68.7%68.3% 0.4 pts
Black11.9%11.4% 0.5 pts
Asian5.5%8.5% 3.0 pts
White11.0%7.2% 3.8 pts
Two or more races1.9%3.1% 1.2 pts
Pacific Islander0.5%1.0% 0.5 pts

Homes near Colony High

Typical home value $689K in zip 91761 as of 2026-05 · trend since 2000

$184K$367K$551K$734K$699K200020052010201520202025

Data Provided by Zillow Group

See recently sold homes in 91761 on Zillow →

High schools near Colony High

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

View on the map →

Frequently asked questions

What school district is Colony High in?

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

Is Colony High a good school?

SchoolRow ranks Colony High 748th of 1,528 California high schools (better than 51% statewide) based on 2024–25 test results (CAASPP 2024–25).

What is the racial makeup of Colony High?

Hispanic 68%, Black 11%, Asian 9%, White 7% (2,085 students, 2023–24).

How much do homes near Colony High cost?

The typical home value in zip code 91761 is $689K 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.