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Principia School
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  • Private, Boarding, Christian (General)
  • SAINT LOUIS, MO

COVID-19 Update for Prospective Students and Families:

We are grateful that our students and teachers are engaged in a full-day, regular in-person schedule. We welcome day visits following CDC and local guidelines. Please refer to our website for ongoing updates.

Report Card

grade A+
Overall Niche Grade
  1. Academics
    grade A
  2. Diversity
    grade A
  3. Teachers
    grade A minus
  4. College Prep
    grade A
  5. Clubs & Activities
    grade A+
  6. Sports
    grade A

About

Applying

Application Deadline
June 20
Application Fee
$50
Interview Required
Yes
Required/Recommended Tests
TOEFL

Tuition

Yearly Tuition
$22,120
Tuition is for the highest grade offered and may have changed for the current school year. For more information, please contact the school.
Boarding (Tuition + Boarding)
$41,160
Received Financial Aid
53%
Average Financial Aid
$13,190
From Principia School

Principia School is an independent, co-educational college preparatory school offering innovative programs for preschool - grade 12. Grounded on the teachings of Christian Science, a worldwide Christian denomination based on the Bible and teachings of Jesus Christ, Principia welcomes students from a variety of faith backgrounds who value scholarship and are eager to grow in character.

Our beautiful 360-acre campus offers a state-of-the-art educational classroom experience, outstanding athletic fields, and over 100 acres of outdoor teaching spaces. Through an integrated curriculum defined by rigor, challenge, and opportunity, students apply critical thinking and problem-solving skills to global challenges. Students learn to think fearlessly, live selflessly, and learn purposefully and how living values that inspire, uplift, and heal can improve the world around them. Principia’s loving and supportive community nurtures and uplifts while encouraging students to be their best selves.

Upcoming Events

Principia School Rankings

Niche ranks nearly 100,000 schools and districts based on statistics and millions of opinions from students and parents.

YouTube Video

Academics

Average Graduation Rate
100%
Average SAT
1200
96 responses
Average ACT
27
23 responses

Purposeful Travel is a Powerful Teaching Tool

All students in grades 5 through 12 travel beyond campus borders for educational trips supporting classroom learning, character development, service activities, and projects. This experiential learning includes local destinations and opportunities to travel on 9 domestic and 7 international trips, including Costa Rica, Israel, Greece, Spain, Taiwan, South Africa, and the Dominican Republic.

Culture & Safety

Poll
80%
of students agree that they feel safe at their school. 15 responses
Poll
73%
of students agree that they like their school and feel happy there. 15 responses
Poll
What are your favorite school events or traditions?
Based on 48 responses
  • Ice breaker, lock in, senior retreat
    25%
  • Big Bash
    15%
  • Arts performances
    10%
  • Homecoming
    10%
  • Spirit Week
    10%
  • International Dance
    8%
  • Ice breaker, senior retreat, junior senior, lock i
    6%

Instagram Posts

Boarding

Students Boarding
24%
Boarding Days Per Week
5-day, 7-day
Top Countries
Australia, Germany, Kenya, Mexico, Nigeria
International Boarding Students
37%

Students

Diversity
grade A
Based on racial and economic diversity and survey responses on school culture and diversity from students and parents.
Students
433
44%
of students and parents agree that students at this school are competitive. 16 responses
69%
of students and parents agree that students at this school are creative and artsy. 16 responses
75%
of students and parents agree that students at this school are athletic. 16 responses

Preschool

Annual Cost
$11,690
Cost is for the most complete schedule offered and may have changed for the current school year. For more information, please contact the school.
Starting Age
3 years
Pre-K Student-Teacher Ratio
No data available  
Schedule Options
  • Offers Full Week
    Yes
  • Offers Part Week
    Yes
  • Offers Full Day
    Yes
  • Offers Part Day
    Yes

Teachers

Student-Teacher Ratio
9:1
National
17:1
Poll
59%
of students and parents agree that the teachers give engaging lessons. 17 responses
Poll
88%
of students and parents agree that the teachers genuinely care about the students. 17 responses
Poll
65%
of students and parents agree that the teachers adequately lead and control the classroom. 17 responses

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Home Listings

Listings by Ojo

Clubs & Activities

Clubs & Activities
grade A+
Based on student and parent reviews of clubs and activities.
Girls Athletic Participation
Very High
Boys Athletic Participation
Very High
55%
of students and parents agree that there are plenty of clubs and organizations for students to get involved in. 11 responses
64%
of students and parents agree that clubs and organizations get the funding they need. 11 responses
55%
of students and parents agree that lots of students participate in clubs and organizations. 11 responses

Principia School Reviews

Rating 4.34 out of 5  126 reviews
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