County directory · Connecticut · 2026–27

School districts in Naugatuck Valley Planning Region, CT

Naugatuck Valley Planning Region has 16 regular public school districts, enrolling 60,335 students in 2024–25. The largest is Waterbury School District (18,776 students, 31% of the county), followed by Bristol School District and Shelton School District. All 16 offer kindergarten. Connecticut's kindergarten cutoff: turn 5 by September 1.

The 16 districts, largest first

School districts in Naugatuck Valley Planning Region, CT by 2024–25 enrollment
District and officeGradesSchoolsStudentsKindergartenDistrict office contact
Waterbury School District
236 Grand Street Chase Office Building, Waterbury
Pre-K–122918,7761,111
(203) 574-8004
Bristol School District
129 Church Street Box 450, Bristol
Pre-K–12137,713476
(860) 584-7000
Shelton School District
382 Long Hill Ave, Shelton
Pre-K–1284,518302
(203) 924-1023
Cheshire School District
29 Main Street, Cheshire
Pre-K–1274,317240
(203) 250-2400
Naugatuck School District
497 Rubber Avenue, Naugatuck
Pre-K–1284,095242
(203) 720-5265
Regional School District 15
286 Whittemore Road Box 395, Middlebury
Pre-K–1273,368204
(203) 758-8259
Watertown School District
61 Echo Lake Road, Watertown
Pre-K–1252,528161
(860) 945-4800
Ansonia School District
42 Grove Street, Ansonia
Pre-K–1242,404133
(203) 736-5095
Seymour School District
2 Botsford Road, Seymour
Pre-K–1242,103151
(203) 888-4564
Wolcott School District
1488 Woodtick Road, Wolcott
Pre-K–1252,100121
(203) 879-8183
Regional School District 16
30 Coer Road, Prospect
Pre-K–1241,898131
(203) 758-6671
Oxford School District
50 Great Oak Road Suite A, Oxford
Pre-K–1241,622106
(203) 888-7754
Regional School District 14
5 Minortown Road Box 469, Woodbury
Pre-K–1241,56178
(203) 263-4339
Derby School District
35 Fifth Street, Derby
Pre-K–1251,31176
(203) 736-5027
Plymouth School District
27 N Harwinton Ave, Terryville
Pre-K–1241,24477
(860) 314-8005
Thomaston School District
185 Branch Road, Thomaston
Pre-K–12377739
(860) 283-3053

Naugatuck Valley Planning Region at a glance

Together the 16 districts run 114 schools from offices in 16 towns. The smallest by enrollment is Thomaston School District, with 777 students; the median Naugatuck Valley Planning Region district has 2,103. By grade span: 16 Pre-K–12.

Kindergarten in 2024–25, counting the 16 districts that report a K grade: 3,648 children. The biggest kindergarten was Waterbury School District's, with 1,111; Bristol School District had 476, and the smallest, Thomaston School District, had 39.

Naugatuck Valley Planning Region holds 16 of Connecticut's 168 regular districts (9.5%) and 13% of its 471,251 public school students, ranking 5th of 9 planning regions by number of districts and 4th by enrollment. By size, 2 enroll 5,000 or more, 13 enroll 1,000 to 4,999 and 1 have fewer than 1,000 students, and the average school here has about 529 students.

Which district am I in?

Each district draws its own attendance zones, so your home address decides it. There is no address lookup here; ask the district. Each one's own site:

Waterbury School District · Bristol School District · Shelton School District · Cheshire School District · Naugatuck School District · Regional School District 15 · Watertown School District · Ansonia School District · Seymour School District · Wolcott School District · Regional School District 16 · Oxford School District · Regional School District 14 · Derby School District · Plymouth School District · Thomaston School District

What grade will my child be in?

↓ Tap Calculate to see the grade
Most US states use a September 1 cutoff. Year-stamped for the 2026–27 school year.

More in Connecticut

Every Connecticut district by county · Connecticut kindergarten cutoff

More Connecticut county directories: Capitol Planning Region (40) · Northeastern Connecticut Planning Region (18) · Northwest Hills Planning Region (19) · South Central Connecticut Planning Region (16) · Southeastern Connecticut Planning Region (20) · Western Connecticut Planning Region (16)

Sources

District list, grades, school counts and websites: NCES Common Core of Data (CCD) LEA Universe Directory, SY 2025-26 (preliminary, v0a), published July 1, 2026. Regular public districts only (NCES LEA types 1 and 2); charter-only, state-run and regional service agencies are not listed.
Enrollment: NCES CCD LEA Membership, SY 2024-25 (v1a), published December 29, 2025 — the newest year NCES has released.
Counties: NCES EDGE Public LEA Geocodes, SY 2024-25 (district office location) and NCES EDGE Geographic Relationship Files 2025 (grf25_lea_county) (counties each district boundary covers).
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