SA
High SchoolsGrades 9-12

Colony High

Chaffey Joint Union High · San Bernardino County · 3850 East Riverside Drive, Ontario, CA 91761-2603

(909) 930-2929 · www.cjuhsd.net

6/10
#575
Rank 575 out of 1,227
Top 47%
English Language Arts6/10 · #521 · 58th percentile
Mathematics6/10 · #588 · 52nd percentile
Science5/10 · #694 · 46th percentile

English Language Arts

Math Trend

Science Trend

School Overview

Colony High sits in Ontario's eastern edge, part of the sprawling Inland Empire where suburban neighborhoods blend with a city that's grown into its own identity beyond just being "near LA." The school lands solidly in the middle of California's rankings, with English scores as its strongest suit, making it a reasonable fit for families who want a traditional comprehensive high school experience without the intense academic pressure of higher-ranked suburban campuses. It's a good option for families rooted in the Ontario-Rancho Cucamonga corridor who value a large school's variety of programs and extracurriculars alongside a community that feels genuinely local.

Student Demographics

469 students tested · 2024-25 school year

Ethnicity

Hispanic
316 (67%)
African American
59 (13%)
Asian
37 (8%)
White
30 (6%)
Other
27 (6%)

Key Indicators

English Learners71 (15%)
Socioeconomically Disadvantaged349 (74%)
Students with Disabilities66 (14%)

Staff & Teachers(2024-25)

2,109
Enrollment
81.2
Teachers (FTE)
26:1
Student-Staff Ratio
6
Administrators (FTE)
26
Avg Class Size*(2023-24)

Graduation Rate

92.5%of students graduate within 4 years

Graduation Rate Trend

College Readiness

Advanced Placement (AP) and International Baccalaureate (IB) programs offer college-level coursework and are a key indicator of academic rigor.

13
AP Courses
offered
23.2%
AP Participation
of students
492
AP Enrollment
students

Source: Civil Rights Data Collection (CRDC) 2021-22

Athletics

Titans · CIF Southern Section

26
varsity sports
10 boys
11 girls
BaseballBasketball (Boys)Basketball (Girls)Cross Country (Boys)Cross Country (Girls)Flag Football (Girls)Football (11 person)Golf (Boys)

Source: CIF Home Campus 2025-26

Community Enrichment Programs

This supplementary score measures the availability of enrichment programs — such as tutoring, music, dance, sports, and arts — within 3 miles of the school. Schools in communities with more diverse and accessible programs score higher.

Nearby Programs3/10 · #1660 · 25th percentile

33 programs within 3 miles. Ranked among High Schools in California.

Nearby Libraries

No programs found