For the 2026 school year, there are 4 private high schools serving 1,794 students in Ontario, CA.
The top-ranked private high schools in Ontario, CA include Orion International Academy and Ontario Christian School.
The average acceptance rate is 99%, which is higher than the California private high school average acceptance rate of 78%.
Top-Ranked Ontario Private High Schools (2026)
School
Location
Quick Facts
11255 Central Ave.
Ontario, CA 91762
(909) 999-0025
Ontario, CA 91762
(909) 999-0025
Gr: PK-12 | 236 students Avg. class size: 12 students Sports: 12 | Extracurrculars: 5 Tuition & acceptance rate listed
Ontario Christian School
(Christian)
1907 S Euclid Ave
Ontario, CA 91762
(909) 984-1756
Ontario, CA 91762
(909) 984-1756
Gr: PK-12 | 1,428 students Tuition & acceptance rate listed
Inland Conservatory For The Performing Arts School
Special Program Emphasis
104 W C St
Ontario, CA 91762
(800) 419-5216
Ontario, CA 91762
(800) 419-5216
Gr: PK-12 | 54 students
Montecito Baptist School
(Baptist)
2560 S Archibald Ave
Ontario, CA 91761
(909) 923-8455
Ontario, CA 91761
(909) 923-8455
Gr: K-12 | 76 students
Overview
This Town (Ontario)
This State (CA)
# Schools
4 Schools
Student Body:
# Students
1,794 Students
275,587 Students
% Average Students of Color
35%
49%
Academics and Faculty:
# Teachers
127 Teachers
26,823 Teachers
Average Student-Teacher Ratio
14:1
10:1
% Average Faculty w/Advanced Degree
75%
61%
Average Class Size
12 students
15 students
Average Number of AP Courses
33 courses
15 courses
Average SAT score
1352
(Out of 1600)
1264
Tuition and Acceptance Rate:
Average Yearly Tuition Cost
$9,500
$23,392
Average Summer Program Cost
$350
$1,485
Average % on Financial Aid
30%
32%
Average Financial Aid Grant
$4,000
$12,545
Average Acceptance Rate
99%
78%
Students by Ethnicity:
Diversity Score
0.67
0.73
# American Indian Students
12 Students
1,844 Students
% American Indian Students
1%
1%
# Asian Students
162 Students
34,996 Students
% Asian Students
10%
13%
# Hispanic Students
200 Students
43,304 Students
% Hispanic Students
13%
16%
# Black Students
69 Students
15,799 Students
% Black Students
4%
6%
# White Students
805 Students
115,814 Students
% White Students
52%
44%
# Hawaiian Students
5 Students
2,949 Students
% Hawaiian Students
n/a
1%
# Two or more races Students
n/a
n/a
% of Two or more races Students
n/a
n/a
# Others Students
305 Students
48,798 Students
% of Others Students
20%
19%
All Ethnic Groups
Extracurriculars and Sports:
Average Number of Extracurriculars
5 extracurriculars
14 extracurriculars
Average Number of Sports
12 sports
10 sports
Frequently Asked Questions
What are the top-ranked private high schools in Ontario, CA?
The top-ranked private high schools in Ontario, CA include Orion International Academy and Ontario Christian School.
How many private high schools are located in Ontario?
4 private high schools are located in Ontario.
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