For the 2025-26 school year, there are 8 public high schools serving 8,412 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 95% 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 (2025-26)
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 | 112 students Student-teacher ratio: 22:1 Minority enrollment: 74%
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 | 16 students Student-teacher ratio: 8:1 Minority enrollment: 94%
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 | 2,085 students Student-teacher ratio: 24:1 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 | 2,121 students Student-teacher ratio: 22:1 Minority enrollment: 97%
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 | 3,223 students Student-teacher ratio: 24:1 Minority enrollment: 96%
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 | 520 students Student-teacher ratio: 22:1 Minority enrollment: 94%
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 | 335 students Student-teacher ratio: 13:1 Minority enrollment: 94%
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
Ontario, California 51³Ô¹ÏÍøºÚÁÏ (Closed)
School
Location
Quick Facts
2230 East Fourth St.
Ontario, CA 91764
(909) 395-3587
Ontario, CA 91764
(909) 395-3587
Gr: K | 321 students Student-teacher ratio: 19:1 Minority enrollment: 97%
4684 Ontario Mills Pkwy., Ste.
Ontario, CA 91764
(970) 258-0518
Ontario, CA 91764
(970) 258-0518
Gr: K-12 | 41 students Minority enrollment: 29%
4684 Ontario Mills Pkwy., Ste.
Ontario, CA 91764
(310) 527-1741
Ontario, CA 91764
(310) 527-1741
Gr: K-12 | 179 students Student-teacher ratio: 36:1 Minority enrollment: 53%
4684 Ontario Mills Pkwy., Ste.
Ontario, CA 91764
(855) 687-6249
Ontario, CA 91764
(855) 687-6249
Gr: 8-12 | 147 students Student-teacher ratio: 21:1 Minority enrollment: 49%
4684 Ontario Mills Pkwy, Ste.
Ontario, CA 91764
(855) 687-6249
Ontario, CA 91764
(855) 687-6249
Gr: K-7 | 148 students Student-teacher ratio: 12:1 Minority enrollment: 39%
4684 Ontario Mills Pkwy #100
Ontario, CA 91764
(310) 527-1741
Ontario, CA 91764
(310) 527-1741
Gr: K-12 | 2,412 students Student-teacher ratio: 38:1 Minority enrollment: 48%
4684 Ontario Mills Pkwy Ste. 1
Ontario, CA 91764
(714) 386-9346
Ontario, CA 91764
(714) 386-9346
Gr: K-12 | 157 students Student-teacher ratio: 20:1 Minority enrollment: 47%
4684 Ontario Mills Pkwy.
Ontario, CA 91764
(310) 527-1741
Ontario, CA 91764
(310) 527-1741
Gr: K-12 | 556 students Student-teacher ratio: 139:1 Minority enrollment: 43%
14630 Armstrong Woods Rd.
Ontario, CA 91764
(310) 527-1741
Ontario, CA 91764
(310) 527-1741
Gr: K-12 | 1,074 student Student-teacher ratio: 30:1 Minority enrollment: 35%
4684 Ontario Mills Pkwy.
Ontario, CA 91764
(818) 697-0535
Ontario, CA 91764
(818) 697-0535
Gr: K-12 | 27 students Minority enrollment: 52%
Canyon View High School (Closed 2011)
Alternative School
557 West Fifth St
Ontario, CA 91762
(909) 983-7102
Ontario, CA 91762
(909) 983-7102
Gr: 11-12
Dorothy Gibson County High School (Closed 2023)
Special Education School
1800 East Seventh Street
Ontario, CA 91764
Ontario, CA 91764
Gr: 6-12 | 109 students Student-teacher ratio: 14:1 Minority enrollment: 55%
1556 South Sultana Ave.
Ontario, CA 91761
(909) 983-5578
Ontario, CA 91761
(909) 983-5578
Gr: K | 317 students Student-teacher ratio: 17:1 Minority enrollment: 98%
Student Outreach Academic Recovery (S.o.a.r.) Prog (Closed 2011)
Alternative School
1556 South Sultana Ave
Ontario, CA 91761
(909) 418-6433
Ontario, CA 91761
(909) 418-6433
Gr: 6-8
4684 Ontario Mills Pkwy., Ste.
Ontario, CA 91764
(855) 687-6249
Ontario, CA 91764
(855) 687-6249
Gr: K-12 | 158 students Minority enrollment: 41%
4684 Ontario Mills Pkwy., Ste.
Ontario, CA 91764
(714) 323-7869
Ontario, CA 91764
(714) 323-7869
Gr: K-12 | 19 students Minority enrollment: 68%
4684 Ontario Mills Pkwy., Ste.
Ontario, CA 91764
(310) 527-1741
Ontario, CA 91764
(310) 527-1741
Gr: K-12 | 44 students Minority enrollment: 68%
Uplift California North Charter (Closed 2020)
Charter School
4684 Ontario Mills Pkwy., Ste.
Ontario, CA 91764
(415) 845-2423
Ontario, CA 91764
(415) 845-2423
Gr: 9-12 | 191 students Minority enrollment: 55%
2300 Highway 166
Ontario, CA 91764
(818) 697-0535
Ontario, CA 91764
(818) 697-0535
Gr: K-12 | 354 students Minority enrollment: 59%
Uplift California South Charter (Closed 2020)
Charter School
4684 Ontario Mills Pkwy., Ste.
Ontario, CA 91764
(415) 845-2423
Ontario, CA 91764
(415) 845-2423
Gr: 9-12 | 51 students Minority enrollment: 69%
4684 Ontario Mills Pkwy., Ste.
Ontario, CA 91764
(415) 845-2423
Ontario, CA 91764
(415) 845-2423
Gr: K-12 | 124 students Student-teacher ratio: 31:1 Minority enrollment: 42%
32248 Crown Valley Rd.
Ontario, CA 91764
(909) 287-3487
Ontario, CA 91764
(909) 287-3487
Gr: K-12 | 1,299 student Student-teacher ratio: 25:1 Minority enrollment: 45%
4612 Dehesa Rd.
Ontario, CA 91764
(909) 287-3487
Ontario, CA 91764
(909) 287-3487
Gr: K-12 | 2,550 students Student-teacher ratio: 49:1 Minority enrollment: 33%
4684 Ontario Mills Pkwy., Ste.
Ontario, CA 91764
(310) 527-1741
Ontario, CA 91764
(310) 527-1741
Gr: K-12 | 75 students Student-teacher ratio: 15:1 Minority enrollment: 30%
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 95% 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: Colony High School vs. Chaffey High School, Chaffey High School vs. Colony High School, Ontario High School vs. Chaffey High School
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