Faithful to God, whose name graces our school, Holy Trinity Catholic School strives to embody a community of the faithful joined intimately with Christ, the incarnate revelation of the Father, through the unifying love of the Holy Spirit.
The parish communities of Fairview Heights, Caseyville, and the surrounding areas, in communion with the Devine persons, are committed to education children and forming disciples of Christ through the disciplines of academic excellence, prayer, spiritual and moral formation, apostolic action, social awareness, and responsibility.
It is our mission to empower parents, the primary educators of our children, in their role of passing on the lifelong values and traditions of the Roman Catholic faith.
In the compassionate spirit of the Holy Trinity, our vision is an innovative, challenging, high quality Catholic education that creates a powerful parish community, which inspires our children to realize their individual dreams fostering a life-long commitment to learning.
Quick Facts (2025-26)
- Top Ranked IL School
- Grades: Prekindergarten-8
- Enrollment: 274 students
- Yearly Tuition: $4,875
- Application Deadline: None / Rolling
- Source: Verified school update
Top Rankings
Holy Trinity Catholic School ranks among the top 20% of private schools in Illinois for:
Category
Attribute
Student Body
School Overview
School Membership(s)School Assoc.
Religious Affiliation
Grades Offered
Grades Prekindergarten-8
Year Founded
2003
School Calendar
Student Body
Total Students
274 students
Student Body Type
Co-ed
% Students of Color
19%
State avg.: 34%
Students by Grade
Academics and Faculty
Total Classroom Teachers
17 teachers
Student-Teacher Ratio
16:1
National avg.: 13:1
Tuition and Acceptance Rate
Admission Deadline
None / Rolling
Yearly Tuition Cost
Application URL
Source: Verified school update
Frequently Asked Questions
How much does Holy Trinity Catholic School cost?
Holy Trinity Catholic School's tuition is approximately $4,875 for private students.
What is Holy Trinity Catholic School's ranking?
Holy Trinity Catholic School ranks among the top 20% of private schools in Illinois for: Largest student body.
When is the application deadline for Holy Trinity Catholic School?
The application deadline for Holy Trinity Catholic School is rolling (applications are reviewed as they are received year-round).
Related Schools
Show me:
People that viewed Holy Trinity Catholic School also viewed these schools: Governor French Academy, Holy Childhood Of Jesus School, St. Clare Catholic School, Blessed Sacrament School and St. Teresa Catholic School.
The nearest high school and elementary school to Holy Trinity Catholic School is First Baptist Academy (1.6 miles away)
The nearest preschool is Berean Christian School (2.0 miles away)
Show me:
Show me:
School
Location
Miles
Quick Facts
219 West Main Street
Belleville, IL 62220
(618) 233-7542
Belleville, IL 62220
(618) 233-7542
6.2 miles
Gr: PK-12 | 107 students Avg. class size: 15 students Sports: 4 | Extracurrculars: 7 Tuition & acceptance rate listed
Holy Childhood Of Jesus School
(Catholic)
215 N John St
Mascoutah, IL 62258
(618) 566-2922
Mascoutah, IL 62258
(618) 566-2922
12.2 miles
Gr: PK-8 | 172 students
St. Clare Catholic School
(Catholic)
214 W 3rd St
O Fallon, IL 62269
(618) 632-6327
O Fallon, IL 62269
(618) 632-6327
3 miles
Gr: PK-8 | 467 students Tuition & acceptance rate listed
Blessed Sacrament School
(Catholic)
8809 W Main St
Belleville, IL 62223
(618) 397-1111
Belleville, IL 62223
(618) 397-1111
5.2 miles
Gr: PK-8 | 168 students Tuition listed
St. Teresa Catholic School
(Catholic)
1108 Lebanon Avenue
Belleville, IL 62221
(618) 235-4066
Belleville, IL 62221
(618) 235-4066
5.2 miles
Gr: PK-8 | 214 students Avg. class size: 21 students Sports: 7 | Extracurrculars: 12 Tuition & acceptance rate listed
School Reviews
Endorse Holy Trinity Catholic School. Endorsements should be a few sentences in length. Please include any comments on:
- Quality of academic programs, teachers, and facilities
- Availability of music, art, sports and other extracurricular activities
- Academic or athletic awards
Recent Articles
Transferring from Public to Private School Mid-Year: What to Expect
Considering a mid-year transfer from public to private school? Learn what to expect with admissions, academic placement, social adjustment, and financial aid to ensure a smooth transition.
A Guide to Day vs. Boarding School: Which Is Right for Your Family
Discover the key differences between day and boarding schools to determine the best fit for your child. Explore benefits, costs, lifestyle factors, and questions to help guide your family’s decision.
The A to Z of Private Schools 2025
Explore the A to Z of private schools in 2025—from admissions to tuition—offering parents and educators clear insights into today’s options.
