St. Thomas the Apostle School
Diocesan school · Grades Pre-K–8
Riverside, CA
9136 Magnolia Ave, Riverside, CA 92503
Overall grade: A+
ChooseAPrivateSchool.com grade, from official facts compared with similar schools.
- B+Class size
- A-Years serving families
- ADiversity
What stands out
- Serving families in Riverside since at least 2011
St. Thomas the Apostle School is a Catholic diocesan school in Riverside, California, for students from pre-K through 8th grade. It has about 138 students and around 17 students per teacher. It has been listed in official private school records since 2011–12. The school is part of the Diocese of San Bernardino. Students attend about 7 hours a day, 178 days a year.
At a glance
- Grades
- Grades Pre-K–8
- Students
- 138
- Teachers
- 8 (full-time equivalent)
- Students per teacher
- 17.2
- Boys and girls
- Coed · 71 girls, 67 boys
- Religious affiliation
- Catholic · Diocesan school
- Diocese
- Diocese of San Bernardino
- School day
- About 7 hours
- School year
- 178 days
- Library
- Yes
Reviews
Be the first to share what you love about St. Thomas the Apostle School.
How it compares
- A smaller school: fewer students than 82% of Catholic elementary schools in California.
- Compared with 416 Catholic elementary schools in California.
Students by survey year
Total students reported in official records since 2011–12.
Students by grade
Student body
Member of
- National Catholic Educational Association
Questions to ask on a tour
- What is tuition, and what does it include (books, fees, uniforms, trips)?
- Do you offer financial aid, sibling discounts or payment plans?
- Do you accept ESA, voucher or tax-credit scholarship funds?
- How big are classes in my child's grade?
- What support is there for students who need extra help or more challenge?
- Is the school accredited, and by whom?
- What do a typical day and a typical week look like?
- How does the school communicate with families?
Questions about St. Thomas the Apostle School
What grades does St. Thomas the Apostle School serve?
St. Thomas the Apostle School serves grades Pre-K–8.
How many students attend St. Thomas the Apostle School?
About 138 students, with 17 students per teacher, according to official records.
How much is tuition at St. Thomas the Apostle School?
Call the school to ask about tuition, financial aid and payment plans.
Official record · Updated October 2026 · Official search · Something wrong? Tell us
Other private schools nearby
Bethel Christian Schools
Christian school (nondenominational) · Grades K–12
Growing: enrollment up 196% since 2011–12
Riverside, CA1.7 mi
Cottonwood Montessori
Montessori school · Grades Pre-K–K
The smallest classes of any preschool in Riverside
Riverside, CA1.9 mi
Riverside Montessori Academy
Montessori school · Grades Pre-K–4
Serving families in Riverside since at least 2011
Riverside, CA2.6 mi
Notre Dame High School
Diocesan school · Grades 9–12
The largest Catholic school in Riverside
Riverside, CA2.8 mi
St. Catherine of Alexandria School
Parish school · Grades K–8
Growing: enrollment up 38% since 2015–16
Riverside, CA2.9 mi
Growing Place
Early childhood program · Grades Pre-K–1
The largest preschool in Riverside
Riverside, CA3.5 mi