Delaware County schools ranked by test score
Latest PSSA + Keystone year (2024-25). 99 schools in Delaware County, Pennsylvania with reported Mathematics scores. Pennsylvania state average: 43.0%.
| Rank | School | Level | Mathematics | vs state |
|---|---|---|---|---|
| 51 | Linwood El Sch Linwood · Chichester SD | Elementary | 41.3% | -1.7pp |
| 52 | Woodlyn El Sch Woodlyn · Ridley SD | Elementary | 40.4% | -2.6pp |
| 53 | Sun Valley HS Aston · Penn-Delco SD | High | 39.7% | -3.3pp |
| 54 | Prospect Park Sch Prospect Park · Interboro SD | Elementary | 39.6% | -3.4pp |
| 55 | Aronimink El Sch Drexel Hill · Upper Darby SD | Elementary | 39.5% | -3.5pp |
| 56 | Chichester SHS Boothwyn · Chichester SD | High | 39.5% | -3.5pp |
| 57 | Marcus Hook El Sch Marcus Hook · Chichester SD | Elementary | 38.2% | -4.8pp |
| 58 | Primos El Sch Primos · Upper Darby SD | Elementary | 36.6% | -6.4pp |
| 59 | Tinicum Sch Essington · Interboro SD | Elementary | 34.6% | -8.4pp |
| 60 | Norwood Sch Norwood · Interboro SD | Elementary | 33.9% | -9.1pp |
| 61 | Northley MS Aston · Penn-Delco SD | Middle | 33.8% | -9.2pp |
| 62 | W B Evans El Sch Yeadon · William Penn SD | Elementary | 33.8% | -9.2pp |
| 63 | Colwyn El Sch Colwyn · William Penn SD | Elementary | 33.3% | -9.7pp |
| 64 | Hillcrest El Sch Drexel Hill · Upper Darby SD | Elementary | 32.9% | -10.1pp |
| 65 | Highland Park El Sch Upper Darby · Upper Darby SD | Elementary | 32.1% | -10.9pp |
| 66 | Interboro SHS Prospect Park · Interboro SD | High | 31.0% | -12.0pp |
| 67 | Garrettford El Sch Drexel Hill · Upper Darby SD | Elementary | 29.3% | -13.7pp |
| 68 | Vision Academy CS East Lansdowne · Vision Academy CS | Elementary | 28.9% | -14.1pp |
| 69 | Ridley MS Ridley Park · Ridley SD | Middle | 26.1% | -16.9pp |
| 70 | Westbrook Park El Sch Clifton Heights · Upper Darby SD | Elementary | 25.2% | -17.8pp |
| 71 | East Lansdowne El Sch East Lansdowne · William Penn SD | Elementary | 25.0% | -18.0pp |
| 72 | Glenolden Sch Glenolden · Interboro SD | Elementary | 23.8% | -19.2pp |
| 73 | Aldan El Sch Aldan · William Penn SD | Elementary | 22.5% | -20.5pp |
| 74 | Stetser El Sch Chester · Chester-Upland SD | Elementary | 22.1% | -20.9pp |
| 75 | Chichester MS Boothwyn · Chichester SD | Middle | 20.8% | -22.2pp |
| 76 | Darby Twp Sch Glenolden · Southeast Delco SD | Elementary | 20.3% | -22.7pp |
| 77 | Charles Kelly El Sch Drexel Hill · Upper Darby SD | Elementary | 20.0% | -23.0pp |
| 78 | Ardmore Avenue El Sch Lansdowne · William Penn SD | Elementary | 19.8% | -23.2pp |
| 79 | Chester Charter Scholars Academy CS Chester · Chester Charter Scholars Academy CS | Combined | 19.2% | -23.8pp |
| 80 | Upper Darby SHS Drexel Hill · Upper Darby SD | High | 19.0% | -24.0pp |
| 81 | Academy Park HS Sharon Hill · Southeast Delco SD | High | 18.6% | -24.4pp |
| 82 | Sharon Hill Sch Sharon Hill · Southeast Delco SD | Elementary | 18.5% | -24.5pp |
| 83 | Delcroft Sch Folcroft · Southeast Delco SD | Elementary | 18.1% | -24.9pp |
| 84 | Harris Sch Collingdale · Southeast Delco SD | Elementary | 15.9% | -27.1pp |
| 85 | Bell Avenue School Yeadon · William Penn SD | Elementary | 14.8% | -28.2pp |
| 86 | Bywood El Sch Upper Darby · Upper Darby SD | Elementary | 14.0% | -29.0pp |
| 87 | Penn Wood HS Lansdowne · William Penn SD | High | 12.3% | -30.7pp |
| 88 | Drexel Hill MS Drexel Hill · Upper Darby SD | Middle | 12.1% | -30.9pp |
| 89 | Walnut Street El Sch Darby · William Penn SD | Elementary | 12.1% | -30.9pp |
| 90 | Park Lane El Sch Darby · William Penn SD | Elementary | 11.3% | -31.7pp |
| 91 | Beverly Hills MS Upper Darby · Upper Darby SD | Middle | 9.6% | -33.4pp |
| 92 | Main Street Sch Upland · Chester-Upland SD | Elementary | 9.4% | -33.6pp |
| 93 | STEM at Showalter Chester · Chester-Upland SD | High | 9.1% | -33.9pp |
| 94 | Stonehurst Hills El Sch Upper Darby · Upper Darby SD | Elementary | 7.9% | -35.1pp |
| 95 | Penn Wood MS Darby · William Penn SD | Middle | 7.0% | -36.0pp |
| 96 | Edgmont Scholars Academy Chester · Chester-Upland SD | Elementary | 3.8% | -39.2pp |
| 97 | Chester Community CS Chester · Chester Community CS | Elementary | 3.7% | -39.3pp |
| 98 | Toby Farms Intermediate School Chester Twp · Chester-Upland SD | Middle | 2.6% | -40.4pp |
| 99 | 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.