J Slowacki School serves 506 students in grades Kindergarten-11, is a member of the Other school association(s).
The student:teacher of J Slowacki School is 19:1 and the school's religious affiliation is Catholic.
Quick Facts (2025-26)
- Top Ranked IL School
- Grades: Kindergarten-11
- Enrollment: 506 students
- Application Deadline: None / Rolling
- Source: National Center for Education Statistics (NCES)
Top Rankings
J Slowacki 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 Kindergarten-11
Student Body
Total Students
506 students
Student Body Type
Co-ed
% Students of Color
1%
State avg.: 34%
Students by Grade

Academics and Faculty
Total Classroom Teachers
26 teachers
Student-Teacher Ratio
19:1
National avg.: 13:1
Tuition and Acceptance Rate
Admission Deadline
None / Rolling
Application URL
School Notes
- School Motto: „Chodzi mi o to, aby język giętki powiedział wszystko, co pomyśli głowa." - Juliusz Słowacki
Source: National Center for Education Statistics (NCES)
Frequently Asked Questions
What is J Slowacki School's ranking?
J Slowacki School ranks among the top 20% of private schools in Illinois for: Largest student body.
When is the application deadline for J Slowacki School?
The application deadline for J Slowacki School is rolling (applications are reviewed as they are received year-round).
School Calendar
View the J Slowacki School yearly calendar below.
School Reviews
Endorse J Slowacki 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.