For the 2026 school year, there are 2 private high schools serving 338 students in Walnut, CA.
The top-ranked private high school in Walnut, CA is Institute Of Knowledge.
50% of private high schools in Walnut, CA are religiously affiliated (most commonly Islamic).
Top-Ranked Walnut Private High Schools (2026)
School
Location
Quick Facts
Institute Of Knowledge
(Islamic)
1009 Via Sorella
Walnut, CA 91789
(909) 595-2401
Walnut, CA 91789
(909) 595-2401
Gr: K-10 | 290 students Avg. class size: 15 students
Overview
This Town (Walnut)
This State (CA)
# Schools
2 Schools
Student Body:
# Students
338 Students
275,982 Students
% Average Students of Color
88%
49%
Academics and Faculty:
# Teachers
31 Teachers
26,829 Teachers
Average Student-Teacher Ratio
11:1
10:1
Average Class Size
15 students
15 students
Tuition and Acceptance Rate:
Students by Ethnicity:
Diversity Score
0.64
0.73
# American Indian Students
n/a
1,844 Students
% American Indian Students
n/a
1%
# Asian Students
166 Students
34,978 Students
% Asian Students
49%
13%
# Hispanic Students
14 Students
43,263 Students
% Hispanic Students
4%
16%
# Black Students
10 Students
15,770 Students
% Black Students
3%
6%
# White Students
34 Students
115,649 Students
% White Students
10%
44%
# Hawaiian Students
n/a
2,942 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
114 Students
48,738 Students
% of Others Students
34%
19%
All Ethnic Groups
Extracurriculars and Sports:
Frequently Asked Questions
What are the top-ranked private high schools in Walnut, CA?
The top-ranked private high schools in Walnut, CA is Institute Of Knowledge.
How many private high schools are located in Walnut?
2 private high schools are located in Walnut.
What percentage of private high schools are religiously affiliated in Walnut?
50% of private high schools in Walnut are religiously affiliated (most commonly Islamic).
Recent Articles
Private School Closures and Consolidations: Warning Signs to Watch
Learn the financial, enrollment, and leadership warning signs that may indicate a private school is at risk of closure or consolidation, and how families can prepare.
AI Tutoring in Private Schools: Innovation or Risk?
Discover how AI tutoring is changing private education, the benefits and risks for students, and what parents should ask before enrolling.
What New Cell Phone Laws Mean for Private School Families
Learn how new cell phone laws are affecting private schools, what parents should expect, and how to evaluate school technology policies in 2026.