Chester County schools ranked by test score
Latest PSSA + Keystone year (2024-25). 19 schools in Chester County, Pennsylvania with reported Mathematics scores. Pennsylvania state average: 43.0%.
| Rank | School | Level | Mathematics | vs state |
|---|---|---|---|---|
| 1 | Downingtown STEM Academy Downingtown · Downingtown Area SD | High | 98.7% | +55.7pp |
| 2 | Conestoga SHS Berwyn · Tredyffrin-Easttown SD | High | 79.5% | +36.5pp |
| 3 | Unionville HS Kennett Square · Unionville-Chadds Ford SD | High | 74.8% | +31.8pp |
| 4 | Downingtown HS West Campus Downingtown · Downingtown Area SD | High | 70.0% | +27.0pp |
| 5 | Downingtown HS East Campus Exton · Downingtown Area SD | High | 68.1% | +25.1pp |
| 6 | Great Valley HS Malvern · Great Valley SD | High | 66.9% | +23.9pp |
| 7 | Avon Grove HS West Grove · Avon Grove SD | High | 64.9% | +21.9pp |
| 8 | West Chester East HS West Chester · West Chester Area SD | High | 58.7% | +15.7pp |
| 9 | West Chester Henderson HS West Chester · West Chester Area SD | High | 58.6% | +15.6pp |
| 10 | Owen J Roberts HS Pottstown · Owen J Roberts SD | High | 56.5% | +13.5pp |
| 11 | Phoenixville Area HS Phoenixville · Phoenixville Area SD | High | 55.0% | +12.0pp |
| 12 | West Chester Bayard Rustin HS West Chester · West Chester Area SD | High | 49.6% | +6.6pp |
| 13 | Oxford Area High School Oxford · Oxford Area SD | High | 43.0% | +0.0pp |
| 14 | Octorara Area JSHS Atglen · Octorara Area SD | High | 41.5% | -1.5pp |
| 15 | Kennett High School Kennett Square · Kennett Consolidated SD | High | 37.1% | -5.9pp |
| 16 | 21st Century Cyber CS West Chester · 21st Century Cyber CS | High | 21.9% | -21.1pp |
| 17 | Coatesville Area SHS Coatesville · Coatesville Area SD | High | 17.1% | -25.9pp |
| 18 | Coatesville Intermediate HS Coatsville · Coatesville Area SD | High | 9.3% | -33.7pp |
| 19 | Achievement House CS Exton · Achievement House CS | High | 4.9% | -38.1pp |
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 Chester 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.