Jurupa Valley High
Public · Grades 9–12 · 1,693 students
Colony High
3850 East Riverside Dr., Ontario, CA 91761
Grades
9–12
High
Students
2,109
Enrolled 2024–25
Students per teacher
25.9 : 1
Full-time teachers
District
Chaffey Joint Union High
San Bernardino County
Schola Grade B · Above average
Letter grade (A–F) · compared with 1,321 California high schools · How we grade
Percentiles compare this school with other California high schools; the line marks the middle. Data: test scores 2021–22, graduation and absenteeism 2022–23 (U.S. Department of Education, EDFacts); coursework 2023–24 (Civil Rights Data Collection); staffing 2024–25 (NCES).
About Colony High
Colony High is a public high school in Ontario, California, serving grades 9–12. It is part of Chaffey Joint Union High. The school is located in a midsize city in San Bernardino County.
In the 2024–25 school year, 2,109 students were enrolled, with about 25.9 students for every full-time teacher. That ratio is larger than the typical California high school (18.5 students per teacher). Its Schola Grade is B (above average), compared with 1,321 California high schools.
Grades & enrollment
Students per grade, 2024–25Grades 9–12
Location & nearby schools
School details
- Type
- Public School · What this means
- Level
- High
- Grades offered
- 9–12
- Enrollment (2024–25)
- 2,109 students
- Students per teacher
- 25.9 to 1
- AP courses offered
- 12
- Charter school
- No
- Magnet school
- No
- Virtual learning
- Offers virtual courses
- Locale
- City — Midsize
- School district
- Chaffey Joint Union High
- County
- San Bernardino County
- NCES school ID
- 060816010606
Schools near Colony High
All 48 schools in Ontario →
Eleanor Roosevelt High
Magnet · Grades 9–12 · 4,353 students
Baldy View ROP
CTE · Grades 9–12
Valley View High (Continuation)
Alternative · Grades 9–12 · 370 students
Chaffey District Online High
Alternative · Grades 9–12 · 93 students
Chaffey Community Day
Alternative · Grades 9–12 · 20 students
School data comes from the U.S. Department of Education: the National Center for Education Statistics (NCES) Common Core of Data and EDGE school locations (2024–25) and Private School Survey (2023–24), the Civil Rights Data Collection (2023–24), and EDFacts (test results 2021–22; graduation and chronic absenteeism 2022–23), plus other public sources. Please contact the school to confirm enrollment, programs, and other details. How we source data.