Principia School
Saint Louis · MO · Religious-affiliated · K-12 combined
Similar nearby schools
Most similar nearby schools
Westminster Christian Academy → Al-Salam Day School → St Louis Priory School → Missouri Torah Institute → Christian Academy Of Greater St Louis → Visitation Academy → De Smet Jesuit High School → H F Epstein Hebrew Academy →How Principia School compares for families
What families should know about Principia School.
- ▸ LocallyMO sits right at the US average on NAEP 8th-grade math — local school quality will set your kid apart.
- ▸ vs Similar SchoolsThe closest comparables nearby: Westminster Christian Academy, Al-Salam Day School, St Louis Priory School and 5 more. See the sidebar to compare side-by-side.
For Parents
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Objective, government-grade data — no school pays us for placement.
🏛️ Your state's public flagship
University of Missouri-Columbia
The in-state tuition gap is the flagship's biggest draw — most in-state families pay far less than the out-of-state sticker. Average net price after aid runs about $20,268/yr. Admission odds depend on your student's GPA and test scores, not which high school they attend.
Source: IPEDS admissions, tuition & enrollment + College Scorecard net price. Flagship = the state's primary public research university.
Enrollment trend & projection
Private school enrollment comes from the NCES Private School Universe Survey (PSS), which is collected every other year — not annually like public-school data. The most recent published collection is 2021–22; NCES targeted spring 2026 for the 2023–24 release — we'll load it as soon as it's published.
If the recent trend holds…
At its recent rate of -54.8%/year, projecting from 2022's 15 students:
A small or specialty program — naive trend math doesn't capture the school's full picture. Read the trend as directional, not predictive.
An extrapolation of the recent trajectory, not a forecast of the school's plans; ignores one-off shocks.
Most similar nearby high schools
The schools most like this one — same type, blended on distance and size — and where their enrollment is heading. These are the schools families here weigh against each other.
| School | Type | Miles | HS enrollment | Trend |
|---|---|---|---|---|
| Westminster Christian Academy Town And Country |
Private | 1.6 | 930 | -4.4% |
| Al-Salam Day School Manchester |
Private | 2.3 | 232 | +3.6% |
| St Louis Priory School Saint Louis |
Private | 0.9 | 307 | -20.5% |
| Missouri Torah Institute Chesterfield |
Private | 5.3 | 72 | — |
| Christian Academy Of Greater St Louis Saint Louis |
Private | 5.9 | 98 | +19.5% |
| Visitation Academy Saint Louis |
Private | 1.9 | 543 | +12.0% |
| De Smet Jesuit High School Saint Louis |
Private | 2.5 | 645 | -13.5% |
| H F Epstein Hebrew Academy Saint Louis |
Private | 6.7 | 74 | -20.4% |