Assumption School

Assumption Catholic School has been educating children for more than 150 years and consists of more than 400 students in pre-K through eighth grades.
In addition to providing children with a faith-based education, the school offers a rigorous academic program and grading scale, and a state-of-the-art campus with features that include a STREAM lab, STEM Robotics Teams, 1-1 technology, Certified Nature Explorer Classroom, after school enrichment courses, summer camps, before and after school care, and weekly Mass and prayer services.

Quick Stats (2023-24)

  • Top Ranked MO School
  • Grades: Prekindergarten-8
  • Enrollment: 431 students
  • Yearly Tuition: $6,080
  • Acceptance rate: 100%
  • Average class size: 19 students
  • Application Deadline: None / Rolling
  • Source: Verified school update

Top Rankings

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

School History

School Overview

School Membership(s)School Assoc.
Religious Affiliation
Grades Offered
Grades Prekindergarten-8
Year Founded

Student Body

Total Students
431 students
Student Body Type
% Students of Color
State avg.: 20%
Students by Grade
Assumption School Student By Grade

Academics and Faculty

Total Classroom Teachers
26 teachers
Student : Teacher Ratio
National avg.: 13:1
Average Class Size
19 students
Classroom Dress Code
Plaid skirts for girls

Tuition and Acceptance Rate

Admission Deadline
None / Rolling
Yearly Tuition Cost
Acceptance Rate
National avg.: 85%
Endowment Size
$0.6 million


Total Sports Offered
5 sports


Total ExtracurricularsTotal Extra-curric.
9 extracurriculars
Club or Organization:
Mad Science, Robotics Club, Rosary Club, Spanish, Summer Camps

Arts and Music Programs:
A+ Art, Choir, Dance Classes

Recreational Athletic Programs:

School Notes

  • A leader in education, Assumption School has been challenging and inspiring children for over 150 years!Our rigorous academic program and grading scale, state-of-the-art campus, and safe and nurturing environment offers pre-kindergarten and K-8 students a better education and brighter future at an affordable price.
  • "We love Assumption and wouldn`t want our son to attend any other school!I am so proud of the young man Quinn is becoming and cherish the friendships we`ve made with other school families. The top-notch curriculum, faculty, and staff make Assumptiona truly beautiful community living Christ and bringing Christ to the world."Amy Rinearson, Parent.
  • With a separate Early Childhood Learning Center featuring a creative curriculum and hands-on X-STREAM (science, technology, religion, engineering, art and math) classroom, our preschool and kindergarten students have the foundation for academic success, and can continue that educational excellence at the elementary school level.
  • Our test results show that Assumption students exceeded learning expectations in Math and Readingover the past two years. While at the same time, nationwide averages fell one to two years below the standards. Here`s how we did it! Assumption adopted virtual learning within three days of the COVID-19 pandemic shutdown of Missouri schools. Our certified teachers were able to adapt quickly to teaching in a virtual learning environment in our pre-K-8th grade-classes without any issues.
  • Come grow with us-all faiths are welcome! Assumption School is fully staffed and continues to transform each student through the power of faith formation and knowledge.In addition to offering a faith-based, loving environment with weekly Mass and Prayer Services, students have access to 1-1 technology, gifted programs for grades 3-5, Spanish 101 for 8th-grade students, and an accelerated STEM Robotics program. Other accolades include:
  • Certified Teachers -Assumption School teachers are Certified Youth Mental Health First Aiders supported by the National Council for Behavioral Health. Teachers are required to complete the Google Level 1 Education Certification. Some have completed the Google Level 2 Education Certification, and nearly all have the Smart Board Certification.
  • Leaders in Catholic School Education -Our principal, Dr. Patricia Hensley, brings 46 years of educational excellence to Assumption-41 in administration and 5 in teaching. Under her leadership, Assumption piloted the curriculum design process for the Archdiocese of St. Louis using a platform known as CHALK. Assumption is actively using the curriculum as a model to be used by all Catholic elementary schools throughout the diocese.
  • Leaders in the St. Louis Archdiocese -Pastor of Assumption Parish and lead clergy of the school, Father Nick Kastenholz is the head of the St. Charles Deanery, which is comprised of 22 Catholic parishes and 20 schools located in St. Charles, St. Peters, O`Fallon, Dardenne Prairie, New Melle, Cottleville, Wentzville, St. Paul, Old Monroe, Josephville, Portage de Sioux, Troy, Elsberry, Hawk Point and Millwood.
  • Safe and Secure Environment -School doors lock at 8 a.m. and all guests must check-in through the private foyer entrance no exceptions! Newly installed window decals blanket our school and new security cameras are coming soon. If an accident happens or a student becomes ill, our school nurse is on duty to assist with minor bumps and bruises, to performing first aid or the use of defibrillators. Assumption has zero tolerance for bullying and abusive behavior. All teachers, employees, and volunteers who interact with students are required to complete background checks and a child abuse prevention program called Protecting God`s Children.
  • Certified Nature Explore Classroom -This one-of-a-kind nature play area is one of only 19 certified classrooms in the state of Missouri, and was built in 2017 through a $50,000 grant. The certified classroom is used throughout the year for programs and class projects. For more information about this exciting outdoor space, visit
  • Recreational Facilities -Our physical education and athletic programs have access to an air-conditioned gymnasium. Two soccer fields,two Gaga-Ball pits, an outdoor concession stand, and playground are a few of the other extracurricular facilities located throughout our spacious school and parish campus.
  • Free Before-School Care -Students can be dropped off as early as 7 a.m. and are supervised by school staff during this time. After-school care is available until 6 p.m. for a nominal fee.
  • After-School Enrichment Programs -From ballet for the little ones, to learning the building blocks of baseball, to joining the chess club or Mad Scientist class, these specialty courses allow children to experience something new and exciting while building friendships along the way.
  • Summer Camps -When the school year ends, summer camps begin! A variety of two-day and weeklong adventures await those who arepre-registered for these fun and educational experiences during the months of June and July. Discover Art Camp, CSI Camp, Cheer Camp and many more unique experiences throughout the summer months!
  • Don`t Delay! Tuition assistance and year-round registration are available at Assumption School.Schedule your school tour today or attend our Open House from 11 a.m.-12:30 p.m, Sunday, Jan. 29,2023!Contact Assumption Principal Dr. Patricia Hensley at636-240-4474for more details.To learn more about Tuition Assistance, contact Assumption Business Manager Mark Vogt at636-240-3721.
  • For more information about Preschool registration, visit more information about Elementary School registration, visit
  • Sample of notable school alumni/alumnae:
    • Josh Sargent - Joshua Thomas Sargent (born February 20, 2000) is an American professional soccer player who plays as a forward or winger for EFL Championship club Norwich City and the United States national team. In May 2017, at the age of 17, Sargent became the youngest U.S. player to score at the FIFA U-20 World Cup.
Source: Verified school update

Frequently Asked Questions

How much does Assumption School cost?
Assumption School's tuition is approximately $6,080 for private students.
What is the acceptance rate of Assumption School?
The acceptance rate of Assumption School is 100%, which is higher than the national average of 89%.
Who are famous alumni from Assumption School?
Assumption School famous alumni include: Josh Sargent.
What sports does Assumption School offer?
Assumption School offers 5 interscholastic sports: Baseball, Basketball, Golf, Soccer and Volleyball.
What is Assumption School's ranking?
Assumption School ranks among the top 20% of private schools in Missouri for: Largest student body and Oldest founding date.
When is the application deadline for Assumption School?
The application deadline for Assumption School is rolling (applications are reviewed as they are received year-round).

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Quick Stats (2023-24)

  • Top Ranked MO School
  • Grades: Prekindergarten-8
  • Enrollment: 431 students
  • Yearly Tuition: $6,080
  • Acceptance rate: 100%
  • Average class size: 19 students
  • Application Deadline: None / Rolling
  • Source: Verified school update

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Did You Know?

The average private school tuition in St. Charles County, MO is $7,230 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).

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