📊 What this ranking measures
Rankings are based on academic achievement — the share of students scoring proficient or above on state reading and math assessments (PSSA 2024–25), ranked against other districts in the same state — not on spending, district size, or staffing. See full methodology →
All 12 Rated Districts in Chester County, PA
Sorted by rating, then state percentile
| County Rank | District | District Office | Rating | State Percentile |
|---|---|---|---|---|
| #1 | Unionville-Chadds Ford School District | Kennett Square | 10/10 Excellent | 98th |
| #2 | Tredyffrin-Easttown School District | Wayne | 10/10 Excellent | 97th |
| #3 | Downingtown Area School District | Downingtown | 10/10 Excellent | 94th |
| #4 | Owen J. Roberts School District | Pottstown | 10/10 Excellent | 91st |
| #5 | Great Valley School District | Malvern | 10/10 Excellent | 90th |
| #6 | West Chester Area School District | Exton | 9/10 Excellent | 83rd |
| #7 | Avon Grove School District | West Grove | 9/10 Excellent | 80th |
| #8 | Phoenixville Area School District | Phoenixville | 8/10 Good | 74th |
| #9 | Kennett Consolidated School District | Kennett Square | 7/10 Good | 66th |
| #10 | Oxford Area School District | Oxford | 5/10 Average | 49th |
| #11 | Octorara Area School District | Atglen | 2/10 Poor | 14th |
| #12 | Coatesville Area School District | Thorndale | 2/10 Poor | 10th |
Best School Districts in Chester County, Pennsylvania (2026)
This page lists the 12 public school districts headquartered in Chester County, Pennsylvania that have a SchoolDistrictFinder rating, scored using PSSA 2024–25 state assessment data. The county rank is simply their order here; the state percentile compares each district with every rated district in Pennsylvania, which is how the 1–10 rating is set. Ratings are not comparable with districts in other states.
Districts are placed in the county of their NCES directory listing. A district's boundaries can cross county lines, and a home in Chester County may be served by a district headquartered next door — search your address or zip code to confirm.
Frequently Asked Questions
What is the best-rated school district in Chester County, Pennsylvania? ▼
Among the 12 rated districts in Chester County, Pennsylvania, the highest-rated is Unionville-Chadds Ford School District (Kennett Square), rated 10/10 (Excellent) and in the 98th percentile of Pennsylvania districts on PSSA 2024–25 reading and math proficiency.
How are these rankings calculated? ▼
Each district's rating comes from the share of its students scoring proficient or above on state reading and math assessments (PSSA 2024–25), percentile-ranked against all rated districts in Pennsylvania and converted to a 1–10 scale. Full methodology here.