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St. Mark Christian School

15w455 79th street Willowbrook, IL 60527

Quick Facts (2026-27)

  • School Type: Montessori School
  • Grades: Nursery/Preschool-5
  • Enrollment: 67 students
  • Average class size: 8 students
  • Application Deadline: None / Rolling
  • Source: ✓Verified school update
St. Mark Christian School Photo #1
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Quick Facts (2026-27)

  • School Type: Montessori School
  • Grades: Nursery/Preschool-5
  • Enrollment: 67 students
  • Average class size: 8 students
  • Application Deadline: None / Rolling
  • Source: ✓Verified school update

School Facts

School Type
Religious Affiliation
Grades Offered
Grades Nursery/Preschool-5
Students By Grade
Year Founded
2003
Summer School Offered
Yes
School Calendar
Campus Size
10 acres
School Motto
Building Strong Foundations for the Future

Student Body

Total Students
67 students
Student Body Type
Co-ed

Academic Profile

Total Classroom Teachers
15 teachers
Student-Teacher Ratio
4:1
National avg.:
Average Class Size
8 students
Classroom Dress Code
Casual
Uniform - Grades 1-5

Tuition & Financial Aid

Admission Deadline
None / Rolling
Application URL

Sports

Total Sports Offered
5 sports
School Mascot
Lions

Extracurriculars

Total ExtracurricularsTotal Extra-curric.
8 extracurriculars
ExtracurricularsExtra-curric.
Club or Organization:
Art ClubChess
Games ClubRobotics Classes
Science ClubSports Club


Arts and Music Programs:
Art ClassesMusic Class

School Notes

  • St. Mark Christian School provides a unique educational experience rooted in Christian values focusing on the Montessori method in the early years and a Classical approach in the primary years.
  • It is our belief that a competitive education along with a solid spiritual formation is what will help all our children thrive in this changing world.
  • Our goal is to cultivate a love for learning and a love for God through a Christian Montessori and Classical education.
  • Our programs: Elementary, Kindergarten, Preschool, Infants & Toddlers
  • We offer full day and half days for our Infant & Toddler, Preschool, and the Kindergarten Program.
  • St. Mark Christian School provides a unique educational experience rooted in Christian values focusing on the Montessori method in the early years and a Classical approach in the primary years.
  • It is our belief that a competitive education along with a solid spiritual formation is what will help all our children thrive in this changing world.
  • Our goal is to cultivate a love for learning and a love for God through a Christian Montessori and Classical education.
  • Our programs: Elementary, Kindergarten, Preschool, Infants & Toddlers
  • We offer full day and half days for our Infant & Toddler, Preschool, and the Kindergarten Program.
Source: Verified school update

Frequently Asked Questions

What sports does St. Mark Christian School offer?
St. Mark Christian School offers 5 interscholastic sports: Dance, Gymnastics, Indoor Soccer, Martial Arts and Soccer.
When is the application deadline for St. Mark Christian School?
The application deadline for St. Mark Christian School is rolling (applications are reviewed as they are received year-round).

School Reviews

  5.00 out of 5  (2 reviews)
5  
We love St. Mark! You truly feel like you are part of a family. The curriculum is engaging, challenging and fun. My children have all gone here and they are excelling now as teenagers because of the foundation that was set here in their early years. The teachers are highly educated, enthusiastic and above all love the children as their own. The fact that they instill a love for Christ in all they do is just another reason on top of their amazing academic program.
- Posted by
5  
This school is amazing! My daughter was placed in advanced math in first grade and was able to read fluently. Their program is so advancing but at the same time well-tailored to meet every individual child's needs. We highly recommend this school to anyone looking for a wonderful community to join.
- Posted by

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Did You Know?

The average private school tuition in Dupage County, IL is $11,029 for elementary schools and $17,054 for high schools (read more about average private school tuition across the country).
The average acceptance rate in Dupage County, IL is 86% (read more about average acceptance rates across the country).

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