Mary Institute & St. Louis Country Day School

Founded in 1859, MICDS is a nonprofit, independent, preparatory school offering non-sectarian education to qualified students regardless of national origin, race or religion.
MICDS consists of the Ronald S. Beasley Lower School, for grades JK-4; Middle School, offering a coordinate model of single-sex education in the core curricular classes, for students in grades 5-8; and the Upper School for grades 9-12.
MICDS is recognized as one of the nation's leaders in independent education.
More than ever our nation needs responsible men and women who can meet the challenges of this world with confidence and embrace all its people with compassion.
The next generation must include those who think critically and resolve to stand for what is good and right.
Our school cherishes academic rigor, encourages and praises meaningful individual achievement, and fosters virtue.
Our independent education prepares young people for higher learning and for lives of purpose and service.

Quick Stats (2024-25)

  • Top Ranked MO School
  • Grades: Prekindergarten-12
  • Enrollment: 1,241 students
  • Yearly Tuition: $24,600
  • Average class size: 16 students
  • Application Deadline: Jan. 16
  • Source: Verified school update

Top Rankings

Mary Institute & St. Louis Country Day School ranks among the top 20% of private schools in Missouri for:

Category
Attribute
Sports offered
School History

School Overview

Religious Affiliation
Grades Offered
Grades Prekindergarten-12
Year Founded
1859
Summer School Offered
Yes

Student Body

Total Students
1,241 students
Student Body Type
Co-ed
% Students of Color
34%
State avg.: 21%
Students by Grade
Mary Institute & St. Louis Country Day School Student By Grade

Academics and Faculty

Total Classroom Teachers
125 teachers
Student : Teacher Ratio
10:1
National avg.: 13:1
% Faculty w/Advanced Degree
71%
Average Class Size
16 students
Advanced Courses
AP AB Calculus, AP Art History, AP BC Calculus, AP Biology, AP Chemistry, AP Environmental Science, AP European History, AP Language and Culture: Chinese, AP Language and Culture: French, AP Language and Culture: German, AP Language and Culture: Spanish, AP Latin, AP Music Theory, AP Physics C: Electricity and Magnetism, AP Physics C: Mechanics, AP Statistics, AP US Government
Average SAT score
1370
(Out of 1600)
Average ACT score
29
(Out of 36)
Classroom Dress Code
Casual

Tuition and Acceptance Rate

Admission Deadline
Jan. 16
Yearly Tuition Cost
Tuition Notes
JK - 4th grade tuition = $18,200 5th - 6th gr tuition = $21,300 7th - 12th grade tuition = $24,600 Lunch and laptop included in tuition
% on Financial Aid
23%
Admissions Director
Peggy B. Laramie

Sports

School Notes

  • Founded in 1859, MICDS is a nonprofit, independent, preparatory school offering non-sectarian education to qualified students regardless of national origin, race or religion. MICDS consists of the Ronald S. Beasley Lower School, for grades JK-4; Middle School, offering a coordinate model of single-sex education in the core curricular classes, for students in grades 5-8; and the Upper School for grades 9-12. MICDS is recognized as one of the nation's leaders in independent education. More than ever our nation needs responsible men and women who can meet the challenges of this world with confidence and embrace all its people with compassion. The next generation must include those who think critically and resolve to stand for what is good and right. Our school cherishes academic rigor, encourages and praises meaningful individual achievement, and fosters virtue. Our independent education prepares young people for higher learning and for lives of purpose and service.
Source: Verified school update

Frequently Asked Questions

How much does Mary Institute & St. Louis Country Day School cost?
Mary Institute & St. Louis Country Day School's tuition is approximately $24,600 for private students.
What sports does Mary Institute & St. Louis Country Day School offer?
Mary Institute & St. Louis Country Day School offers 20 interscholastic sports: Baseball, Basketball, Cheering, Crew, Cross Country, Cycling, Dance, Diving, Field Hockey, Football, Golf, Ice Hockey, Lacrosse, Soccer, Squash, Swimming, Tennis, Track and Field, Volleyball and Wrestling. Mary Institute & St. Louis Country Day School is ranked as one of the top 20% of private schools in Missouri for most sports offered.
What is Mary Institute & St. Louis Country Day School's ranking?
Mary Institute & St. Louis Country Day School ranks among the top 20% of private schools in Missouri for: Highest average ACT score, Largest student body, Most sports offered and Oldest founding date.
When is the application deadline for Mary Institute & St. Louis Country Day School?
The application deadline for Mary Institute & St. Louis Country Day School is Jan. 16.

School Reviews

5  
I received a very solid education from this school. I began attending in JK (Junior Kindergarten) and graduated after 14 years there. Now that I''m in college, I can look back and say MICDS prepared me incredibly well for the challenges I''m beginning to face. I grew up in a school that exposed me to different cultures, gave me incredible opportunities to grow, and had teachers that were flexible and excited to teach every day. And on top of that, they don't accept anything less than your best. I was challenged constantly and, despite being shy, never felt like my opinion was unwelcome. I found my voice at MICDS and I would highly recommend it to anyone searching for a private school in St. Louis who wants a school focused on community and excellence.
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Quick Stats (2024-25)

  • Top Ranked MO School
  • Grades: Prekindergarten-12
  • Enrollment: 1,241 students
  • Yearly Tuition: $24,600
  • Average class size: 16 students
  • Application Deadline: Jan. 16
  • Source: Verified school update

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Did You Know?

The average private school tuition in Saint Louis, MO is $17,061 for elementary schools and $19,551 for high schools (read more about average private school tuition across the country).
The average acceptance rate in Saint Louis, MO is 83% (read more about average acceptance rates across the country).

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