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St. Mark School

711 N Underhill St
Peoria, IL 61606

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Tel: (309) 677-7131

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Since 1922, Saint Mark Catholic School has provided Academic Excellence in Service of the Lord to the Peoria community.

Pre-kindergarten through 8th grade receive the highest levels of academics with a strong foundation of Catholic values and morals.

As a Catholic School, it is our belief that there must be an integration of our faith in our total school curriculum.

We attempt to provide an atmosphere where the Gospel values are instilled, Christian attitudes are developed, academic excellence is fostered, and discipline is stressed.

We strive on all accounts to be a school where Christ is loved, excellence is expected, character counts, and traditions thrive.

The mission of Saint Mark Catholic School is to foster the spiritual growth and academic life of its students and faculty and to teach children, with the cooperation of parents, the Catholic faith.

Your child is accepted, cherished, and challenged as a unique individual.

Quick Facts (2026)

Grades: Prekindergarten-8
Enrollment: 193 students
Yearly Tuition: $45,000
Application Deadline: None / Rolling
Source: National Center for Education Statistics (NCES)

School Overview

School Membership(s)School Assoc.

National Catholic Educational Association (NCEA)

Religious Affiliation

Catholic

Grades Offered

Grades Prekindergarten-8

School Calendar

View School Calendar

Student Body

Total Students

193 students

Student Body Type

Co-ed

% Students of Color

50%

State avg.: 34%

Students by Grade

Academics and Faculty

Total Classroom Teachers

18 teachers

Student-Teacher Ratio

11:1

National avg.: 11:1

Tuition and Acceptance Rate

Admission Deadline

None / Rolling

Yearly Tuition Cost

$45,000

View national tuition avg.

Application URL

Online Application

Source: National Center for Education Statistics (NCES)

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Frequently Asked Questions

How much does St. Mark School cost?

St. Mark School's tuition is approximately $45,000 for private students.

When is the application deadline for St. Mark School?

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

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Quick Facts (2026)

Grades: Prekindergarten-8
Enrollment: 193 students
Yearly Tuition: $45,000
Application Deadline: None / Rolling
Source: National Center for Education Statistics (NCES)

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Did You Know?

The average private school tuition in Peoria, IL is $15,024 for elementary schools (read more about average private school tuition across the country).

The average acceptance rate in Peoria, IL is 66% (read more about average acceptance rates across the country).