Photo: Hayden Soloviev · CC BY 4.0Cos Cob’s public schools
Greenwich School District has no state test or graduation results we can use, so there is no Schools grade for Cos Cob. Each school below is shown with its own results.
Tests spring 2022, when 100% of students in Connecticut’s tested grades sat them, and the class of 2023’s graduation rate (U.S. Department of Education). How TownRatings grades schools
Cos Cob’s schools, in brief
School by school
13 of Cos Cob’s 15 district schools with test results score above the middle of Connecticut’s 920 public schools. Riverside School places highest (better than 100%); Hamilton Avenue School lowest (44%). See the path ↓
Which school depends on your street
11 elementary schools serve Cos Cob, graded from C+ to A+, so it’s worth checking the specific school. Then three middle schools and one high school: Greenwich High School. See the path ↓
Written from the figures on this page. Tests are from 2021–22, graduation from the class of 2023; each school’s own letter uses 2020–21 results.
Where will my kid go?
Pick a grade. These are the public schools in Cos Cob, with each school’s own grade.
6th grade in Cos Cob · depends on your address
Eastern Middle School
Grades 6–8 · 797 students · 12:1 students per teacher · in Riverside
Western Middle School
Grades 6–8 · 563 students · 9:1 students per teacher · in Greenwich
Central Middle School
Grades 6–8 · 483 students · 9:1 students per teacher · in Greenwich
7th grade in Cos Cob · depends on your address
Eastern Middle School
Grades 6–8 · 797 students · 12:1 students per teacher · in Riverside
Western Middle School
Grades 6–8 · 563 students · 9:1 students per teacher · in Greenwich
Central Middle School
Grades 6–8 · 483 students · 9:1 students per teacher · in Greenwich
8th grade in Cos Cob · depends on your address
Eastern Middle School
Grades 6–8 · 797 students · 12:1 students per teacher · in Riverside
Western Middle School
Grades 6–8 · 563 students · 9:1 students per teacher · in Greenwich
Central Middle School
Grades 6–8 · 483 students · 9:1 students per teacher · in Greenwich
9th grade in Cos Cob
Greenwich High School
Grades 9–12 · 2,620 students · 13:1 students per teacher · in Greenwich
10th grade in Cos Cob
Greenwich High School
Grades 9–12 · 2,620 students · 13:1 students per teacher · in Greenwich
Which school depends on your address. To confirm it, ask the Greenwich School District.
The district
Spending and class size are shown but don’t count toward the grade. Each district’s own page has every school.
Well above the state in reading
Cos Cob vs. its neighbors
Schools grades for the Connecticut towns that share Cos Cob’s borders.
| Town | Schools | Main districts |
|---|---|---|
| Cos Cob | — | Greenwich |
Every school in Cos Cob
15 schools. Each public school’s letter compares its own 2020–21 reading and math results with Connecticut’s other public schools (the newest school-level results we have).
Questions about Cos Cob’s schools
Are Cos Cob’s schools good?
There’s no Schools grade for Cos Cob. Greenwich School District has no state test or graduation results we can use, so there is no Schools grade for Cos Cob. Each school below is shown with its own results. School by school, 13 of its 15 district schools with test results score above the middle of Connecticut’s public schools on their 2020–21 results.
What school district is Cos Cob in?
Greenwich School District.
Where do Cos Cob kids go to high school?
Greenwich High School.
Parents talk
What Cos Cob families are saying about school.
Looking for colleges? Colleges near Cos Cob → They have their own page.
School data: state test results (2021–22, with participation) and four-year graduation rates (class of 2023) reported to the U.S. Department of Education (EDFacts via ED Data Express); each school’s own letter uses its 2020–21 results (EDFacts via the Urban Institute); schools and enrollment from NCES (2024–25; private schools 2023–24); spending from the Census Bureau’s school finance survey (FY2024). Stars are from neighbors.