Principia School
An independent school in St. Louis, Missouri serving students from infancy through grade 12, with boarding for grades 8 through 12.
- Research checked
No licensed photograph of this school is available yet. Photographs are shown only when we hold the rights.
At a glance
- School type
- Independent · Private
- Official website
- principiaschool.org
Address: 13201 Clayton Road, St. Louis, MO 63131
Academic
Boarding
The school confirms that it offers boarding but its pages do not name a full, weekly or flexible option, so none is shown.
- Boarding entry
- Not confirmed
- Boarding is for
- Not confirmed
- Accommodation
- On campussource
- Boarding houses
- Not confirmed
- Rooms
- Not confirmed
- Weekends and holidays
- Not confirmed
- Pastoral care
- Not confirmed
- Activities
- Not confirmed
- Facilities
- Not confirmed
Admissions
- Entry points
- Not confirmed
- Application process
- Not confirmed
- Assessments and interviews
- Not confirmed
- Documents
- Not confirmed
- Language requirements
- Not confirmed
- Deadlines
- Not confirmed
- International applicants
- Not confirmed
- Guardianship
- Not confirmed
- Apply
- Not confirmed
Fees
Annual boarding total, calculated from published figures
A total is shown only where the school’s own figures support it. Original currency; no conversion.
Boarding (pattern not named) · All pupils · 2026-27 · Grades 9-12
US$48,400 a year
Basis: Tuition and boarding, published per year.
| Fee | Amount | For | Year | Includes tuition |
|---|---|---|---|---|
| Tuition and boarding (all-in)Upper School (Grades 9-12) Boarding Program Tuition & Fees, total (2026-2027 School Year) | US$48,400 per yearsource | All pupilsGrades 9-12 | 2026-27read 17 October 2026 | Yes |
“Includes tuition: No” means the figure is a boarding charge on top of tuition. Day-pupil figures are shown for reference only and are never used as a boarding price. Additional costs not listed here may apply; always confirm with the school.
Scholarships and financial assistance
No scholarships or financial assistance are confirmed here. That does not mean none exist: ask the school.
Inspection reports
No inspection report is recorded for this campus in our research yet.
Accreditation, registration and membership
No accreditation, registration or membership is recorded for this school in our research yet.
How to read this page
Every fact links to the page it was read from. “Not confirmed” means we could not find it on an official page; it does not mean the school does not offer it. Research checked describes our own review of official sources and is not an endorsement.
Sources (reviewed 17 October 2026)