Assumption Catholic Grade School, a Catholic elementary school located in the Archdiocese of St.
Louis, was established in 1871, for the purpose of educating the children in the newly founded parish in O'Fallon, Missouri.
Our school is committed to providing the children of Assumption and St.
Barnabas parishes with quality education, both in religious and secular areas.
Assumption School is firmly committed to teaching as Jesus did and living our faith in Jesus Christ and in gospel values.
The school prides itself in its openness to new trends in education and in a commitment to reach out to others in the local and global community through various service projects.
We offer Kindergarten (half day) through 8th grade from approximately 480 children from Assumption and St.
Barnabas Parishes. We are proud that graduates are consistently accepted into the high school of their choice.

Quick Stats (2021-22)

  • Top Ranked MO School
  • Grades: Prekindergarten-8
  • Students: 542 students
  • Application Deadline: None / Rolling

Top Rankings

Assumption School ranks among the top 20% of private schools in Missouri for:

Category
Attribute

School Overview

Religious Affiliation
Grades Offered
Grades Prekindergarten-8

Student Body

Total Students
542 students
Student Body Type
Co-ed
% Students of Color
4%
State avg.: 18%
Students by Grade
Assumption School Student By Grade

Academics and Faculty

Total Classroom Teachers
24 teachers
Student : Teacher Ratio
23:1
National avg.: 13:1

Tuition and Acceptance Rate

Admission Deadline
None / Rolling

School Reviews

Endorse Assumption 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
Endorse this school:

Recent Articles

How Exposed Is Your School?
How Exposed Is Your School?
There's much more to running a small private school than offering great academics and teaching. Be sure to check under the hood regularly to make sure everything keeps running smoothly.
Teen Travel In Uncertain Times
Teen Travel In Uncertain Times
Most adults find traveling more complicated and challenging that it was pre-pandemic. We offer some suggestions for safe teen travel in these uncertain times.
Using Facebook, YouTube and Pinterest to Promote Your School
Using Facebook, YouTube and Pinterest to Promote Your School
Social media is an effective marketing tool for your school. Here are some suggestions for using Facebook, YouTube and Pinterest.

Quick Stats (2021-22)

  • Top Ranked MO School
  • Grades: Prekindergarten-8
  • Students: 542 students
  • Application Deadline: None / Rolling

Request Information

Did You Know?

The average private school tuition in St. Charles County, MO is $6,840 for elementary schools (read more about average private school tuition across the country).
The average acceptance rate in St. Charles County, MO is 93% (read more about average acceptance rates across the country).

Quick Links