Largest Schools in Waterbury (2025)

Schools with the highest enrollment. Ranked by the Success Index (US) from official American data; 31 schools in Waterbury, Connecticut. Rank positions shown on each profile are within United States and Connecticut.

#	School	Sector	Enrollment	Success Index (US)	Key result	Students
1	Crosby High School Waterbury · High · Grades 9–12	Public	1,453	12.4 Lower 50%	5% Math proficiency	1,453
2	John F. Kennedy High School Waterbury · High · Grades 9–12	Public	1,391	18.9 Lower 50%	10% Math proficiency	1,391
3	Wilby High School Waterbury · High · Grades 9–12	Public	1,196	14.0 Lower 50%	2% Math proficiency	1,196
4	Michael F. Wallace Middle School Waterbury · Middle · Grades 4–8	Public	1,059	23.5 Lower 50%	13% Math proficiency	1,059
5	West Side Middle School Waterbury · Middle · Grades 6–8	Public	848	23.0 Lower 50%	9% Math proficiency	848
6	Waterbury Arts Magnet School Waterbury · High · Grades 6–12	Public	820	34.8 Lower 50%	17% Math proficiency	820
7	North End Middle School Waterbury · Middle · Grades 6–8	Public	766	24.2 Lower 50%	13% Math proficiency	766
8	Waterbury Career Academy Waterbury · High · Grades 9–12	Public	709	41.6 Lower 50%	22% Math proficiency	709
9	Rotella Interdistrict Magnet School Waterbury · Elementary · Grades PK–5	Public	614	58.8 Top 50%	54% Math proficiency	614
10	Wendell L. Cross School Waterbury · Elementary · Grades PK–8	Public	606	44.5 Lower 50%	42% Math proficiency	606
11	Maloney Interdistrict Magnet School Waterbury · Elementary · Grades PK–5	Public	590	57.3 Top 50%	51% Math proficiency	590
12	B. W. Tinker School Waterbury · Elementary · Grades PK–5	Public	578	23.8 Lower 50%	24% Math proficiency	578
13	ACES at Chase Waterbury · Middle · Grades 6–9	Public	556	56.4 Top 50%	41% Math proficiency	556
14	H. S. Chase School Waterbury · Elementary · Grades PK–5	Public	543	40.7 Lower 50%	38% Math proficiency	543
15	Gilmartin School Waterbury · Elementary · Grades PK–8	Public	462	17.5 Lower 50%	14% Math proficiency	462
16	Carrington School Waterbury · Elementary · Grades PK–8	Public	455	40.7 Lower 50%	33% Math proficiency	455
17	Bunker Hill School Waterbury · Elementary · Grades PK–5	Public	445	22.3 Lower 50%	20% Math proficiency	445
18	Reed School Waterbury · Elementary · Grades PK–8	Public	439	22.7 Lower 50%	25% Math proficiency	439
19	Duggan School Waterbury · Elementary · Grades PK–8	Public	429	33.8 Lower 50%	29% Math proficiency	429
20	F. J. Kingsbury School Waterbury · Elementary · Grades PK–5	Public	416	23.2 Lower 50%	29% Math proficiency	416
21	Margaret M. Generali Elementary School Waterbury · Elementary · Grades PK–5	Public	415	32.0 Lower 50%	26% Math proficiency	415
22	Woodrow Wilson School Waterbury · Elementary · Grades PK–5	Public	415	18.8 Lower 50%	22% Math proficiency	415
23	Driggs School Waterbury · Elementary · Grades PK–5	Public	410	18.1 Lower 50%	15% Math proficiency	410
24	Brass City Charter School Waterbury · Elementary · Grades PK–8	Charter	401	54.8 Top 50%	52% Math proficiency	401
25	Walsh School Waterbury · Elementary · Grades PK–5	Public	350	19.7 Lower 50%	14% Math proficiency	350
26	Sprague School Waterbury · Elementary · Grades PK–5	Public	344	20.7 Lower 50%	17% Math proficiency	344
27	Hopeville School Waterbury · Elementary · Grades PK–5	Public	291	23.3 Lower 50%	12% Math proficiency	291
28	Washington School Waterbury · Elementary · Grades PK–5	Public	284	26.5 Lower 50%	17% Math proficiency	284
29	Bucks Hill School Waterbury · Elementary · Grades PK–5	Public	283	27.5 Lower 50%	17% Math proficiency	283
30	Roberto Clemente International Dual Language School Waterbury · Elementary · Grades PK–4	Public	275	29.8 Lower 50%	74.2% Free/reduced-price lunch	275
31	Regan School Waterbury · Elementary · Grades PK–5	Public	237	34.7 Lower 50%	37% Math proficiency	237

Crosby High School in Waterbury leads the 2025 list of largest schools in Waterbury with Enrollment 1,453. Of the 31 schools shown, 30 are public, 1 are charter.

For the full picture see the wider Connecticut largest schools rankings, every school on the Waterbury page, or the comparison tool to put a shortlist side by side.

Free academic assessment

Is your child on grade level in reading and math?

Success Tutoring offers personalised English and math tutoring from Kindergarten to Grade 12. Start with a free online assessment and a clear plan for the year ahead.

Personalised learning plan mapped to the Australian Curriculum
English & Maths from Kindergarten to Year 12
Flexible memberships, no lock-in contracts
Centres across NSW, VIC, QLD, WA, SA and ACT

Frequently asked questions

What is the best largest school in Waterbury?

Crosby High School in Waterbury, Connecticut ranks first among largest schools in Waterbury with Enrollment 1,453 (Enrollment: 1,453).

How are largest schools in Waterbury ranked?

Schools with the highest enrollment. Only schools eligible for the Success Index (US) are included; the index is shown alongside for context.

Are these 2025 rankings official?

No. They are computed by Success Tutoring from official American data (Urban Institute Education Data Portal (NCES CCD, EDFacts); NCES Common Core of Data). States set their own assessments and proficiency cut scores, so proficiency rates are most comparable within a state. Use the state rankings for like-for-like comparisons.