St Katherine Day School -Upper
Wynnewood · PA · Catholic religious-affiliated · K-12 combined
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How St Katherine Day School -Upper compares for families
What families should know about St Katherine Day School -Upper.
- ▸ LocallyPA students outperform the US average on NAEP 8th-grade math (+4 points).
- ▸ vs Similar SchoolsThe closest comparables nearby: Archbishop John Carroll High School, Archbishop Carroll High School, Academy-Notre Dame De Namur and 5 more. See the sidebar to compare side-by-side.
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Your state's public flagship
Pennsylvania State University-Main Campus
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 $32,875/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.
Not enough enrollment history on file to chart a trend for this school yet.
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 |
|---|---|---|---|---|
| Archbishop John Carroll High School Radnor |
Private | 0.0 | 674 | — |
| Archbishop Carroll High School Malvern |
Private | 0.0 | 673 | — |
| Academy-Notre Dame De Namur Villanova |
Private | 2.2 | 551 | +2.0% |
| Sacred Heart Academy Bryn Mawr Bryn Mawr |
Private | 2.4 | 200 | -23.4% |
| Devon Preparatory School Devon |
Private | 3.6 | 309 | +7.7% |
| Regina Luminis Academy Berwyn |
Private | 4.5 | 141 | +43.9% |
| Merion Mercy Academy Merion Station |
Private | 6.1 | 438 | — |
| Jack M Barrack Hebrew Academy Bryn Mawr |
Private | 2.4 | 312 | -13.6% |
At a glance
JSON · Using this page with an AI assistantSt Katherine Day School -Upper is a private high school in Wynnewood, PA, enrolling 74 students in grades 9-12 in 2022.
Sources: National Center for Education Statistics (enrollment), the federal Civil Rights Data Collection and EDFacts, state education agencies where named, and the school's own published documents where named.
Questions families ask
How many students attend St Katherine Day School -Upper? St Katherine Day School -Upper is a private high school in Wynnewood, PA, enrolling 74 students in grades 9-12 in 2022.
Analysis: Test Prep Gurus (High School Reach, highschoolreach.com). These figures may be quoted with attribution to Test Prep Gurus.
More private high schools in the Philadelphia area, ranked by their published college lists.
What does AI tell parents about St Katherine Day School -Upper?
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Related reading
AP courses · October 2026
Test scores · October 2026