Delaware County schools ranked by test score
Latest PSSA + Keystone year (2024-25). 69 schools in Delaware County, Pennsylvania with reported Mathematics scores. Pennsylvania state average: 43.0%.
| Rank | School | Level | Mathematics | vs state |
|---|---|---|---|---|
| 51 | East Lansdowne El Sch East Lansdowne · William Penn SD | Elementary | 25.0% | -18.0pp |
| 52 | Glenolden Sch Glenolden · Interboro SD | Elementary | 23.8% | -19.2pp |
| 53 | Aldan El Sch Aldan · William Penn SD | Elementary | 22.5% | -20.5pp |
| 54 | Stetser El Sch Chester · Chester-Upland SD | Elementary | 22.1% | -20.9pp |
| 55 | Darby Twp Sch Glenolden · Southeast Delco SD | Elementary | 20.3% | -22.7pp |
| 56 | Charles Kelly El Sch Drexel Hill · Upper Darby SD | Elementary | 20.0% | -23.0pp |
| 57 | Ardmore Avenue El Sch Lansdowne · William Penn SD | Elementary | 19.8% | -23.2pp |
| 58 | Sharon Hill Sch Sharon Hill · Southeast Delco SD | Elementary | 18.5% | -24.5pp |
| 59 | Delcroft Sch Folcroft · Southeast Delco SD | Elementary | 18.1% | -24.9pp |
| 60 | Harris Sch Collingdale · Southeast Delco SD | Elementary | 15.9% | -27.1pp |
| 61 | Bell Avenue School Yeadon · William Penn SD | Elementary | 14.8% | -28.2pp |
| 62 | Bywood El Sch Upper Darby · Upper Darby SD | Elementary | 14.0% | -29.0pp |
| 63 | Walnut Street El Sch Darby · William Penn SD | Elementary | 12.1% | -30.9pp |
| 64 | Park Lane El Sch Darby · William Penn SD | Elementary | 11.3% | -31.7pp |
| 65 | Main Street Sch Upland · Chester-Upland SD | Elementary | 9.4% | -33.6pp |
| 66 | Stonehurst Hills El Sch Upper Darby · Upper Darby SD | Elementary | 7.9% | -35.1pp |
| 67 | Edgmont Scholars Academy Chester · Chester-Upland SD | Elementary | 3.8% | -39.2pp |
| 68 | Chester Community CS Chester · Chester Community CS | Elementary | 3.7% | -39.3pp |
| 69 | Chester Upland Sch of Arts Chester · Chester-Upland SD | Elementary | 2.3% | -40.7pp |
About this ranking
Schools are ranked by the percentage of students who scored at or above the PSSA + Keystone % Proficient or Advanced threshold on the latest available PSSA + Keystone Mathematics test (school year 2024-25). Only public schools in Delaware County, Pennsylvania with a reasonable cohort size are shown. A higher percentage is better.
The comparison column shows the gap to the Pennsylvania statewide enrollment-weighted average. To compare against neighboring counties, use the full Pennsylvania ranking.