| District | City | Rating | Students | Schools | Grades | Zip Codes |
|---|---|---|---|---|---|---|
| Radnor Township School District | Bryn Mawr | 10/10 Excellent · 99th pct | 3,564 | 5 | K–12 | 2 |
| Haverford Township School District | Ardmore | 10/10 Excellent · 98th pct | 6,634 | 7 | K–12 | 3 |
| Rose Tree Media School District | Lenni | 10/10 Excellent · 97th pct | 4,143 | 6 | K–12 | 2 |
| Springfield School District | Springfield | 10/10 Excellent · 97th pct | 4,390 | 5 | K–12 | 1 |
| Wallingford-Swarthmore School District | Swarthmore | 10/10 Excellent · 97th pct | 3,678 | 5 | K–12 | 2 |
| Garnet Valley School District | Chester Heights | 10/10 Excellent · 94th pct | 4,522 | 5 | K–12 | 3 |
| Marple Newtown School District | Broomall | 9/10 Excellent · 84th pct | 3,847 | 6 | K–12 | 2 |
| West Chester Area School District | Cheyney | 9/10 Excellent · 83rd pct | 12,145 | 17 | K–12 | 2 |
| Penn-Delco School District | Aston | 6/10 Average · 54th pct | 3,258 | 6 | K–12 | 2 |
| Ridley School District | Crum Lynne | 4/10 Below Average · 36th pct | 5,519 | 9 | K–12 | 6 |
| Chichester School District | Marcus Hook | 3/10 Below Average · 25th pct | 3,047 | 6 | K–12 | 1 |
| Interboro School District | Essington | 3/10 Below Average · 24th pct | 3,304 | 6 | K–12 | 5 |
| Southeast Delco School District | Darby | 1/10 Poor · 9th pct | 4,125 | 6 | K–12 | 3 |
| Upper Darby School District | Clifton Heights | 1/10 Poor · 7th pct | 12,495 | 14 | K–12 | 3 |
| William Penn School District | Lansdowne | 1/10 Poor · 6th pct | 4,623 | 11 | K–12 | 1 |
| Chester-Upland School District | Chester | 1/10 Poor · 1st pct | 3,100 | 7 | PK–12 | 1 |
How Delaware County compares
Together they enroll 82,394 students across 121 schools. The largest is Upper Darby School District with 12,495 students. Districts here average 6.1/10, above the Pennsylvania average of 5.5/10. Ratings range from 1/10 to 10/10.
School Districts in Delaware County, Pennsylvania
Delaware County has 16 public school districts covering 39 zip codes. The top-rated district in Delaware County is Radnor Township School District (10/10). Ratings are based on the share of students proficient in reading and math on state assessments (PSSA 2024–25), ranked against all districts in Pennsylvania. Directory details come from NCES CCD 2024–25.
Enter your zip code on any page to confirm your exact district assignment — district boundaries are address-specific and may not follow county or city lines.
Frequently Asked Questions
How many school districts are in Delaware County, PA?
16 school districts serve zip codes in Delaware County, PA. This page lists each one with its rating, enrollment, grade span and the zip codes it covers.
What is the best-rated school district in Delaware County, PA?
Of the districts serving Delaware County, Radnor Township School District has the highest rating on this site at 10/10. That places it in the 99th percentile among Pennsylvania school districts.
How are these school district ratings calculated?
Each rating is the share of students scoring proficient or above on Pennsylvania reading and math assessments, ranked against other districts in Pennsylvania and converted to a 1–10 scale. Percentiles compare districts within Pennsylvania only, never across state lines.