The public high schools with the lowest student-to-teacher ratios in Delaware County, Pennsylvania
Across Delaware County, Pennsylvania, 17 public high schools are ranked here, ranked by the fewest students per teacher, a proxy for class size and staffing. Radnor SHS leads the list at 12.4:1, against a median of 14.4:1 across the ranked schools.
Sort any column, filter to a school or district, or download the full ranking as a CSV. Source data is federal NCES and state assessment reporting, 2024-25.
| # | School | City | Ratio |
|---|---|---|---|
| 1 | Radnor SHS | Radnor, PA | 12.4:1 |
| 2 | Interboro SHS | Prospect Park, PA | 12.5:1 |
| 3 | Penn Wood HS | Lansdowne, PA | 12.6:1 |
| 4 | Garnet Valley HS | Glen Mills, PA | 12.8:1 |
| 5 | Penncrest HS | Media, PA | 13.2:1 |
| 6 | Sun Valley HS | Aston, PA | 13.2:1 |
| 7 | Strath Haven HS | Wallingford, PA | 13.3:1 |
| 8 | Chichester SHS | Boothwyn, PA | 13.4:1 |
| 9 | Ridley HS | Folsom, PA | 14.4:1 |
| 10 | STEM at Showalter | Chester, PA | 14.4:1 |
| 11 | Academy Park HS | Sharon Hill, PA | 14.7:1 |
| 12 | Marple Newtown SHS | Newtown Square, PA | 15.1:1 |
| 13 | Chester HS | Chester, PA | 15.5:1 |
| 14 | Haverford SHS | Havertown, PA | 16.4:1 |
| 15 | Upper Darby SHS | Drexel Hill, PA | 17.0:1 |
| 16 | Springfield HS | Springfield, PA | 17.5:1 |
| 17 | Penn Wood 9th Grade Academy | Yeadon, PA | 47.4:1 |
All schools in Delaware County →
Lowest ratio rankings at a wider scope
Other rankings for Delaware County, Pennsylvania
allk12 is independent and not affiliated with, endorsed by, or sponsored by NCES, the US Census Bureau, any state education agency or assessment program, or any other government agency. Source data is compiled from public records and provided "as is," without warranty of accuracy or completeness. You rely on it, and any analysis derived from it, at your own risk. See the full disclaimer.