For the 2026 school year, there is 1 public school serving 343 students in Cos Cob, CT (there are 2 private schools, serving 56 private students). 89% of all K-12 students in Cos Cob, CT are educated in public schools (compared to the CT state average of 89%).
The top-ranked public school in Cos Cob, CT is Cos Cob School. Overall testing rank is based on a school's combined math and reading proficiency test score ranking.
Cos Cob, CT public school have an average math proficiency score of 67% (versus the Connecticut public school average of 42%), and reading proficiency score of 67% (versus the 51% statewide average). Schools in Cos Cob have an average ranking of 8/10, which is in the top 30% of Connecticut public schools.
Minority enrollment is 33% of the student body (majority Hispanic), which is less than the Connecticut public school average of 55% (majority Hispanic).
Best Public Schools in Cos Cob, CT (2026)
School
(Math and Reading Proficiency)
(Math and Reading Proficiency)
Location
Quick Facts
Rank: #11.
Cos Cob School
(Math: 65-69% | Reading: 65-69%)
Rank:
Rank:
8/
Top 30%10
300 East Putnam Ave.
Cos Cob, CT 06807
(203) 869-4670
Cos Cob, CT 06807
(203) 869-4670
Gr: PK-5 | 343 students Student-teacher ratio: 10:1 Minority enrollment: 33%
Frequently Asked Questions
What are the top-ranked public schools in Cos Cob, CT?
The top-ranked public schools in Cos Cob, CT include Cos Cob School.
How many public schools are located in Cos Cob?
1 public schools are located in Cos Cob.
What percentage of students in Cos Cob go to public school?
89% of all K-12 students in Cos Cob are educated in public schools (compared to the CT state average of 89%).
What is the racial composition of students in Cos Cob?
Cos Cob public schools minority enrollment is 33% of the student body (majority Hispanic), which is less than the Connecticut public schools average of 55% (majority Hispanic).
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