St. Cletus School (Top Ranked Private School for 2026-27)

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About the School

St. Cletus School in La Grange, IL offers co–ed Catholic education for grades PK through 8 in a suburban setting.
The school enrolls 362 udents with a student–teacher ratio of 21:1 and an average class size of 20.
Founded in a suburban community,.
Cletus is a member of the National Catholic Educational Association and received a Blue Ribbon recognition in 2014.
Approximately 35% of the udent body represents students of color, reflecting a measure of diversity at the school.
Cletus School ranks among the top 20% of private schools in Illinois by udent body size.

Quick Facts (2026-27)

Top Ranked IL School
Grades: Prekindergarten-8
Enrollment: 362 students
Average class size: 20 students
Application Deadline: None / Rolling
Source: National Center for Education Statistics (NCES)

School Rankings

St. Cletus School ranks among the top 20% of private schools in Illinois for:

School Facts

School Membership(s)School Assoc.

National Catholic Educational Association (NCEA)

Religious Affiliation

Catholic

Grades Offered

Grades Prekindergarten-8

Students By Grade

View Data

Distribution of Students By Grade
Grade	St. Cletus School
Pre-K	63
Kind	27
1	38
2	25
3	24
4	36
5	56
6	25
7	23
8	45

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School Calendar

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Awards

Blue Ribbon School - Selected in 2014

Student Body

Total Students

362 students

Student Body Type

Co-ed

% Students of Color

35%

State avg.: 34%

Academics & Faculty

Total Classroom Teachers

17 teachers

Student-Teacher Ratio

21:1

National avg.: 11:1

Average Class Size

20 students

Tuition & Acceptance Rate

Admission Deadline

None / Rolling

Application URL

Online Application

School Notes

School Motto: Faith, Family, Future

Source: National Center for Education Statistics (NCES)

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Frequently Asked Questions

What schools are St. Cletus School often compared to?

St. Cletus School is often viewed alongside schools like St. Francis Xavier School by visitors of our site.

What is St. Cletus School's ranking?

St. Cletus School ranks among the top 20% of private schools in Illinois for: Largest student body.

When is the application deadline for St. Cletus School?

The application deadline for St. Cletus School is rolling (applications are reviewed as they are received year-round).

School Reviews

5.00 out of 5 (2 reviews)

5 9/21/2020

St. Cletus is a great school with a nurturing environment. Teachers are great, their tech is top notch and most importantly, my students love their school.

- Posted by Parent - Parent

5 4/9/2012

The Director, Stage and Prop Design, and everyone else should be highly commended for the performance of Willy Wonka Junior. Of course the kids were great and did a very professional job of acting, set change, lighting and music. I cannot say enough how much I enjoyed this play. I am grandmother to Emily Wiet, 6th Grade. Thank you

- Posted by Parent - kaymf

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Did You Know?

The average private school tuition in Cook County, IL is $13,473 for elementary schools and $19,515 for high schools (read more about average private school tuition across the country).

The average acceptance rate in Cook County, IL is 83% (read more about average acceptance rates across the country).