For the 2026 school year, there are 2 private preschools serving 273 students in Rialto, CA.
The top-ranked private preschool in Rialto, CA is St. Catherine Of Siena School.
The average acceptance rate is 87%, which is higher than the California private preschool average acceptance rate of 82%.
Top-Ranked Rialto Private Preschools (2026)
School
Location
Quick Facts
St. Catherine Of Siena School
(Catholic)
335 N Sycamore Ave
Rialto, CA 92376
(909) 875-7821
Rialto, CA 92376
(909) 875-7821
Gr: PK-8 | 172 students Avg. class size: 16 students Sports: 5 Tuition & acceptance rate listed
1123 S Cactus Ave
Rialto, CA 92376
(909) 820-2191
Rialto, CA 92376
(909) 820-2191
Gr: PK-12 | 101 students Avg. class size: 12 students Tuition & acceptance rate listed
Rialto, California Private Schools (Closed)
School
Location
Quick Facts
304 N Pepper Avenue
Rialto, CA 92376
(909) 874-0471
Rialto, CA 92376
(909) 874-0471
Gr: K-6 | 23 students
2759 N Ayala
Rialto, CA 92377
(909) 820-2466
Rialto, CA 92377
(909) 820-2466
Gr: NS-6 | 206 students
Overview
This Town (Rialto)
This State (CA)
# Schools
2 Schools
Student Body:
# Students
273 Students
363,347 Students
% Average Students of Color
87%
50%
Academics and Faculty:
# Teachers
21 Teachers
26,537 Teachers
Average Student-Teacher Ratio
13:1
14:1
% Average Faculty w/Advanced Degree
83%
58%
Average Class Size
14 students
18 students
Tuition and Acceptance Rate:
Average Yearly Tuition Cost
$4,600
$15,627
Average Acceptance Rate
87%
82%
Students by Ethnicity:
Diversity Score
0.59
0.70
# American Indian Students
n/a
1,694 Students
% American Indian Students
n/a
n/a
# Asian Students
10 Students
30,302 Students
% Asian Students
4%
9%
# Hispanic Students
158 Students
43,013 Students
% Hispanic Students
58%
12%
# Black Students
15 Students
12,400 Students
% Black Students
5%
4%
# White Students
17 Students
112,369 Students
% White Students
6%
32%
# Hawaiian Students
n/a
2,000 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
73 Students
144,451 Students
% of Others Students
27%
42%
All Ethnic Groups
Extracurriculars and Sports:
Average Number of Sports
5 sports
6 sports
Frequently Asked Questions
What are the top-ranked private preschools in Rialto, CA?
The top-ranked private preschools in Rialto, CA is St. Catherine Of Siena School.
How many private preschools are located in Rialto?
2 private preschools are located in Rialto.
Recent Articles
Financial Aid 101 for Private School Families 2026
Guide to private school financial aid in 2026, with current costs, key planning timelines and practical steps parents need to maximize aid options.
Why Extracurricular Activities Matter in 2026
Discover why extracurricular activities remain essential in 2026, with updated research, costs, and admissions insights for parents and students.
How to Appeal for Financial Aid After Admission
Learn how to appeal for financial aid after admission to a private school, with expert steps, timelines, and 2026 updates for families.