For the 2026 school year, there are 7 public schools serving 3,999 students in Groton, CT (there are 1 private school, serving 154 private students). 95% of all K-12 students in Groton, CT are educated in public schools (compared to the CT state average of 89%).
The top-ranked public schools in Groton, CT are Marine Science Magnet High School, Thames River Magnet School and Robert E. Fitch High School. Overall testing rank is based on a school's combined math and reading proficiency test score ranking.
Groton, CT public schools have an average math proficiency score of 36% (versus the Connecticut public school average of 42%), and reading proficiency score of 53% (versus the 51% statewide average). Schools in Groton have an average ranking of 3/10, which is in the bottom 50% of Connecticut public schools.
Minority enrollment is 56% of the student body (majority Hispanic), which is more than the Connecticut public school average of 55% (majority Hispanic).
Best Public Schools in Groton, CT (2026)
School
(Math and Reading Proficiency)
(Math and Reading Proficiency)
Location
Quick Facts
Rank: #11.
Marine Science Magnet High School
Magnet School
(Math: 50-59% | Reading: 80-89%)
Rank:
Rank:
9/
Top 20%10
130 Shennecossett Road
Groton, CT 06340
(860) 434-4800
Groton, CT 06340
(860) 434-4800
Gr: 9-12 | 274 students Student-teacher ratio: 11:1 Minority enrollment: 39%
Rank: #22.
Thames River Magnet School
Magnet School
(Math: 50-54% | Reading: 50-54%)
Rank:
Rank:
6/
Top 50%10
250 Brandegee Avenue
Groton, CT 06340
(860) 980-8230
Groton, CT 06340
(860) 980-8230
Gr: PK-5 | 501 students Student-teacher ratio: 12:1 Minority enrollment: 60%
Rank: #33.
Robert E. Fitch High School
(Math: 39% | Reading: 60-64%)
Rank:
Rank:
6/
Top 50%10
101 Groton Long Point Road
Groton, CT 06340
(860) 449-7200
Groton, CT 06340
(860) 449-7200
Gr: 9-12 | 942 students Student-teacher ratio: 11:1 Minority enrollment: 57%
Rank: #44.
Charles Barnum Magnet School
Magnet School
(Math: 40-44% | Reading: 55-59%)
Rank:
Rank:
6/
Top 50%10
68 Briar Hill Rd.
Groton, CT 06340
(860) 449-5640
Groton, CT 06340
(860) 449-5640
Gr: PK-5 | 339 students Student-teacher ratio: 12:1 Minority enrollment: 49%
Rank: #55.
Catherine Kolnaski Magnet School
Magnet School
(Math: 40-44% | Reading: 50-54%)
Rank:
Rank:
5/
Bottom 50%10
500 Poquonnock Rd.
Groton, CT 06340
(860) 449-5608
Groton, CT 06340
(860) 449-5608
Gr: PK-5 | 375 students Student-teacher ratio: 12:1 Minority enrollment: 62%
Rank: #66.
Groton Middle School
(Math: 32% | Reading: 52%)
Rank:
Rank:
5/
Bottom 50%10
35 Groton Long Point Road
Groton, CT 06340
(860) 446-4200
Groton, CT 06340
(860) 446-4200
Gr: 6-8 | 884 students Student-teacher ratio: 12:1 Minority enrollment: 53%
Rank: #77.
Ella T. Grasso Technical High School
Vocational School
(Math: 15-19% | Reading: 35-39%)
Rank:
Rank:
3/
Bottom 50%10
189 Fort Hill Rd.
Groton, CT 06340
(860) 448-0220
Groton, CT 06340
(860) 448-0220
Gr: 9-12 | 684 students Student-teacher ratio: 12:1 Minority enrollment: 63%
Frequently Asked Questions
What are the top-ranked public schools in Groton, CT?
The top-ranked public schools in Groton, CT include Marine Science Magnet High School, Thames River Magnet School and Robert E. Fitch High School.
How many public schools are located in Groton?
7 public schools are located in Groton.
What percentage of students in Groton go to public school?
95% of all K-12 students in Groton are educated in public schools (compared to the CT state average of 89%).
What is the racial composition of students in Groton?
Groton public schools minority enrollment is 56% of the student body (majority Hispanic), which is more than the Connecticut public schools average of 55% (majority Hispanic).
Which public schools in Groton are often viewed compared to one another?
Popular comparisons of public schools in Groton include: Thames River Magnet School vs. Charles Barnum Magnet School, Charles Barnum Magnet School vs. Thames River Magnet School
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