📊 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 16 Rated Districts in Naugatuck Valley Planning Region, CT
Sorted by rating, then state percentile
| County Rank | District | District Office | Rating | State Percentile |
|---|---|---|---|---|
| #1 | Cheshire School District | Cheshire | 10/10 Excellent | 90th |
| #2 | Regional School District 15 | Middlebury | 7/10 Good | 61st |
| #3 | Regional School District 16 | Prospect | 7/10 Good | 60th |
| #4 | Regional School District 14 | Woodbury | 6/10 Average | 53rd |
| #5 | Shelton School District | Shelton | 6/10 Average | 51st |
| #6 | Wolcott School District | Wolcott | 6/10 Average | 51st |
| #7 | Oxford School District | Oxford | 5/10 Average | 46th |
| #8 | Watertown School District | Watertown | 5/10 Average | 40th |
| #9 | Plymouth School District | Terryville | 4/10 Below Average | 37th |
| #10 | Thomaston School District | Thomaston | 4/10 Below Average | 33rd |
| #11 | Seymour School District | Seymour | 3/10 Below Average | 29th |
| #12 | Bristol School District | Bristol | 3/10 Below Average | 26th |
| #13 | Naugatuck School District | Naugatuck | 2/10 Poor | 17th |
| #14 | Derby School District | Derby | 1/10 Poor | 9th |
| #15 | Waterbury School District | Waterbury | 1/10 Poor | 4th |
| #16 | Ansonia School District | Ansonia | 1/10 Poor | 3rd |
Best School Districts in Naugatuck Valley Planning Region, Connecticut (2026)
This page lists the 16 public school districts headquartered in Naugatuck Valley Planning Region, Connecticut 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 Connecticut, 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 Naugatuck Valley Planning Region 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 Naugatuck Valley Planning Region, Connecticut? ▼
Among the 16 rated districts in Naugatuck Valley Planning Region, Connecticut, the highest-rated is Cheshire School District (Cheshire), rated 10/10 (Excellent) and in the 90th percentile of Connecticut 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 Connecticut and converted to a 1–10 scale. Full methodology here.