For the 2026 school year, there are 8 public high schools serving 8,241 students in Ontario, CA.
The top-ranked public high schools in Ontario, CA are Chaffey District Online High School, Chaffey Community Day and Colony High School. Overall testing rank is based on a school's combined math and reading proficiency test score ranking.
Ontario, CA public high schools have an average math proficiency score of 20% (versus the California public high school average of 28%), and reading proficiency score of 53% (versus the 51% statewide average). High schools in Ontario have an average ranking of 5/10, which is in the bottom 50% of California public high schools.
Ontario, CA public high school have a Graduation Rate of 85%, which is less than the California average of 86%.
The school with highest graduation rate is Colony High School, with 92% graduation rate. Read more about public school graduation rate statistics in California or national school graduation rate statistics.
Minority enrollment is 96% of the student body (majority Hispanic), which is more than the California public high school average of 79% (majority Hispanic).
Best Public High Schools in Ontario, CA (2026)
School
(Math and Reading Proficiency)
(Math and Reading Proficiency)
Location
Quick Facts
Rank: #11.
Chaffey District Online High School
Alternative School
(Math: ≥50% | Reading: ≥50%)
Rank:
Rank:
8/
Top 30%10
1802 East 7th St.
Ontario, CA 91764
(909) 985-0966
Ontario, CA 91764
(909) 985-0966
Gr: 9-12 | 93 students Student-teacher ratio: 19:1 Minority enrollment: 76%
Rank: #22.
Chaffey Community Day
Alternative School
(Math: <50% | Reading: <50% )
Rank:
Rank:
7/
Top 50%10
1802 East Seventh St.
Ontario, CA 91764
(909) 985-0966
Ontario, CA 91764
(909) 985-0966
Gr: 9-12 | 20 students Student-teacher ratio: 10:1
Rank: #33.
Colony High School
(Math: 25% | Reading: 62%)
Rank:
Rank:
7/
Top 50%10
3850 East Riverside Dr.
Ontario, CA 91761
(909) 930-2929
Ontario, CA 91761
(909) 930-2929
Gr: 9-12 | 2,109 students Student-teacher ratio: 26:1 Minority enrollment: 93%
Rank: #44.
Ontario High School
(Math: 21% | Reading: 60%)
Rank:
Rank:
6/
Top 50%10
901 West Francis St.
Ontario, CA 91762
(909) 988-7411
Ontario, CA 91762
(909) 988-7411
Gr: 9-12 | 1,994 students Student-teacher ratio: 22:1 Minority enrollment: 98%
Rank: #55.
Chaffey High School
(Math: 18% | Reading: 54%)
Rank:
Rank:
5/
Bottom 50%10
1245 North Euclid Ave.
Ontario, CA 91762
(909) 988-5560
Ontario, CA 91762
(909) 988-5560
Gr: 9-12 | 3,127 students Student-teacher ratio: 23:1 Minority enrollment: 97%
Rank: #66.
Entrepreneur High School
Charter School
(Math: 10-14% | Reading: 45-49%)
Rank:
Rank:
4/
Bottom 50%10
26655 Highland Ave.
Ontario, CA 91764
(909) 888-8458
Ontario, CA 91764
(909) 888-8458
Gr: 9-12 | 528 students Student-teacher ratio: 18:1 Minority enrollment: 95%
Rank: #77.
Valley View High (Continuation School)
Alternative School
(Math: ≤5% | Reading: 6-9%)
Rank:
Rank:
1/
Bottom 50%10
1801 East Sixth St.
Ontario, CA 91764
(909) 985-0966
Ontario, CA 91764
(909) 985-0966
Gr: 9-12 | 370 students Student-teacher ratio: 15:1 Minority enrollment: 91%
Rank: n/an/a
Baldy View Rop
Vocational School
1501 South Bon View Ave.
Ontario, CA 91761
(909) 947-3400
Ontario, CA 91761
(909) 947-3400
Gr: 9-12
Frequently Asked Questions
What are the top-ranked public high schools in Ontario, CA?
The top-ranked public high schools in Ontario, CA include Chaffey District Online High School, Chaffey Community Day and Colony High School.
How many public high schools are located in Ontario?
8 public high schools are located in Ontario.
What is the racial composition of students in Ontario?
Ontario public high schools minority enrollment is 96% of the student body (majority Hispanic), which is more than the California public high schools average of 79% (majority Hispanic).
Which public high schools in Ontario are often viewed compared to one another?
Popular comparisons of public high schools in Ontario include: Chaffey High School vs. Colony High School, Colony High School vs. Chaffey High School
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