Home > Illinois > Madison County > Alton

St. Mary School

536 E 3rd St
Alton, IL 62002

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Tel: (618) 465-8523

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St. Marys is dedicated to giving children a good academic and religious education.

The instructional staff is comprised of highly qualified and certified lay people as well as priests from St. Marys Parish, and Sisters from the Convent of St. Francis of the Martyr St. George.

There are currently over 340 students enrolled in the school, which offers classes from Kindergarten through eighth grade.

St. Mary's also has a 3- and 4-year-old pre-school program, which runs half-day instructional classes.

Quick Facts (2026)

Top-Ranked IL School
Grades: Prekindergarten-8
Enrollment: 337 students
Yearly Tuition: $6,130
Average class size: 15 students
Application Deadline: None / Rolling
Source: National Center for Education Statistics (NCES)

Top Rankings

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

School Overview

School Membership(s)School Assoc.

National Catholic Educational Association (NCEA)
Other special emphasis association(s)
Other school association(s)

Religious Affiliation

Catholic

Grades Offered

Grades Prekindergarten-8

School Calendar

View School Calendar

Student Body

Total Students

337 students

Student Body Type

Co-ed

% Students of Color

50%

State avg.: 34%

Students by Grade

Academics and Faculty

Total Classroom Teachers

22 teachers

Student-Teacher Ratio

15:1

National avg.: 11:1

Average Class Size

15 students

Tuition and Acceptance Rate

Admission Deadline

None / Rolling

Yearly Tuition Cost

$6,130

View national tuition avg.

Application URL

Online Application

School Notes

School Motto: Educating Hearts and Minds.

St. Marys is dedicated to giving children a good academic and religious education. The instructional staff is comprised of highly qualified and certified lay people as well as priests from St. Marys Parish, and Sisters from the Convent of St. Francis of the Martyr St. George. There are currently over 340 students enrolled in the school, which offers classes from Kindergarten through eighth grade. St. Mary's also has a 3- and 4-year-old pre-school program, which runs half-day instructional classes.

Sample of notable school alumni/alumnae:
- Mike Adams, Professional Football Player
- Terry Adams, MLB Player

Source: National Center for Education Statistics (NCES)

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Frequently Asked Questions

How much does St. Mary School cost?

St. Mary School's tuition is approximately $6,130 for private students.

Who are famous alumni from St. Mary School?

St. Mary School famous alumni include: Mike Adams, Professional Football Player and Terry Adams, MLB Player.

What is St. Mary School's ranking?

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

When is the application deadline for St. Mary School?

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

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Quick Facts (2026)

Top-Ranked IL School
Grades: Prekindergarten-8
Enrollment: 337 students
Yearly Tuition: $6,130
Average class size: 15 students
Application Deadline: None / Rolling
Source: National Center for Education Statistics (NCES)

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Did You Know?

The average private school tuition in Madison County, IL is $6,245 for elementary schools and $10,070 for high schools (read more about average private school tuition across the country).

The average acceptance rate in Madison County, IL is 86% (read more about average acceptance rates across the country).