📊 What this ranking measures
Rankings are based on academic achievement — the share of students scoring proficient or above on state reading and math assessments (NCES EDFacts, 2021–22 for most districts), ranked against other districts in the same state — not on spending, district size, or staffing. See full methodology →
All 6 Rated Districts in Strafford County, NH
Sorted by rating, then state percentile
| County Rank | District | District Office | Rating | State Percentile |
|---|---|---|---|---|
| #1 | Oyster River Cooperative School District | Durham | 10/10 Excellent | 94th |
| #2 | Dover School District | Dover | 5/10 Average | 49th |
| #3 | Farmington School District | Farmington | 2/10 Poor | 19th |
| #4 | Somersworth School District | Somersworth | 2/10 Poor | 18th |
| #5 | Rochester School District | Rochester | 1/10 Poor | 9th |
| #6 | Milton School District | Milton | 1/10 Poor | 3rd |
Best School Districts in Strafford County, New Hampshire (2026)
This page lists the 6 public school districts headquartered in Strafford County, New Hampshire that have a SchoolDistrictFinder rating, scored using EDFacts 2021–22 state assessment data. The county rank is simply their order here; the state percentile compares each district with every rated district in New Hampshire, 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 Strafford 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 Strafford County, New Hampshire? ▼
Among the 6 rated districts in Strafford County, New Hampshire, the highest-rated is Oyster River Cooperative School District (Durham), rated 10/10 (Excellent) and in the 94th percentile of New Hampshire districts on EDFacts 2021–22 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 (EDFacts 2021–22), percentile-ranked against all rated districts in New Hampshire and converted to a 1–10 scale. Full methodology here.