麻豆果冻传媒

Cos Cob School

300 East Putnam Ave.
Cos Cob, CT 06807
(School attendance zone shown in map)
8/
10
Top 30%
Serving 337 students in grades Kindergarten-5, Cos Cob School ranks in the top 30% of all schools in Connecticut for overall test scores (math proficiency is top 30%, and reading proficiency is top 30%).
The percentage of students achieving proficiency in math is 60-64% (which is higher than the Connecticut state average of 40%). The percentage of students achieving proficiency in reading/language arts is 65-69% (which is higher than the Connecticut state average of 50%).
The student:teacher ratio of 9:1 is lower than the Connecticut state level of 12:1.
Minority enrollment is 34% of the student body (majority Hispanic), which is lower than the Connecticut state average of 52% (majority Hispanic).

Quick Stats (2024-25)

  • School Type: Magnet School
  • Grades: Kindergarten-5
  • Enrollment: 337 students
  • Student:Teacher Ratio: 9:1
  • Minority Enrollment: 34%
  • : Top 30% in CT
  • : 60-64% (Top 30%)
  • : 65-69% (Top 30%)
  • : 55-59% (Top 50%)
  • Source: National Center for Education Statistics (NCES), CT Dept. of Education
<麻豆果冻传媒 class="so-dt-title" id="top-rankings">Top Rankings

Cos Cob School ranks among the top 20% of public schools in Connecticut for:

Category
Attribute
<麻豆果冻传媒 class='so-dt-title' id="overview">School Overview
Cos Cob School's student population of 337 students has declined by 18% over five school years.
The teacher population of 38 teachers has grown by 8% over five school years.
School Type
Grades Offered
Grades Kindergarten-5
(offers virtual instruction)
Total Students
337 students
This chart displays total students of Cos Cob School by year, with the latest 2022-23 school year data.
Gender %
This chart displays gender of Cos Cob School
Total Classroom Teachers
38 teachers
This chart displays the total teachers of Cos Cob School by year, with the latest 2022-23 school year data.
Students by Grade
This chart displays the students of Cos Cob School by grade.
<麻豆果冻传媒 class='so-dt-title' id="school-rankings">School Rankings
Cos Cob School ranks within the top 30% of all 942 schools in Connecticut (based off of combined math and reading proficiency testing data).
The diversity score of Cos Cob School is 0.53, which is less than the diversity score at state average of 0.67. The school's diversity has stayed relatively flat over five school years.
This School
State Level (CT)
#215 out of 942 schools
(Top 30%)
This chart displays the overall school rank of Cos Cob School, with the latest 2021-22 school year data.
60-64%
40%
This chart displays the percentage of students that scored at or above 'proficient' levels in Math of Cos Cob School and the percentage of public school students that scored at or above 'proficient' levels in Math of public schools in Connecticut by year, with the latest 2021-22 school year data.
65-69%
50%
This chart displays the percentage of students that scored at or above 'proficient' levels in Reading/Language Arts of Cos Cob School and the percentage of public school students that scored at or above 'proficient' levels in Reading/Language Arts of Connecticut by year, with the latest 2021-22 school year data.
55-59%
47%
This chart displays the percentage of students that scored at or above 'proficient' levels in Science of Cos Cob School and the percentage of public school students that scored at or above 'proficient' levels in Science of public schools in Connecticut by year, with the latest 2021-22 school year data.
Student : Teacher Ratio
9:1
12:1
This chart displays the student teacher ratio of Cos Cob School and the public school average student teacher ratio of Connecticut by year, with the latest 2022-23 school year data.
American Indian
n/a
n/a
Asian
10%
5%
This chart displays the percentage of Asian students in Cos Cob School and the percentage of Asian public school students in Connecticut by year, with the latest 2022-23 school year data.
Hispanic
15%
30%
This chart displays the percentage of Hispanic students in Cos Cob School and the percentage of Hispanic public school students in Connecticut by year, with the latest 2022-23 school year data.
Black
1%
12%
This chart displays the percentage of Black students in Cos Cob School and the percentage of Black public school students in Connecticut by year, with the latest 2022-23 school year data.
White
66%
48%
This chart displays the percentage of White students in Cos Cob School and the percentage of White public school students in Connecticut by year, with the latest 2022-23 school year data.
Hawaiian
n/a
n/a
Two or more races
8%
5%
This chart displays the percentage of students of two or more races in Cos Cob School and the percentage of public school students of two or more races in Connecticut by year, with the latest 2022-23 school year data.
All Ethnic Groups
This chart displays the percentage breakdown of students of all ethnic groups in Cos Cob School.
This chart displays the percentage breakdown of public school students of all ethnic groups in Connecticut.
0.53
This chart displays the diversity score of Cos Cob School and the public school average diversity score of Connecticut by year, with the latest 2022-23 school year data.
Eligible for Free Lunch
12%
36%
This chart displays the percentage of students who is eligible for free lunch in Cos Cob School and the percentage of public school students who is eligible for free lunch in Connecticut by year, with the latest 2022-23 school year data.
Eligible for Reduced Lunch
1%
6%
This chart displays the percentage of students who is eligible for reduced lunch in Cos Cob School and the percentage of public school students who is eligible for reduced lunch in Connecticut by year, with the latest 2022-23 school year data.
School Statewide Testing
School District Name
Source: National Center for Education Statistics (NCES), CT Dept. of Education
<麻豆果冻传媒 class='so-dt-title' id='faq'>Frequently Asked Questions
What is Cos Cob School's ranking?
Cos Cob School is ranked #215 out of 942 schools, which ranks it among the top 30% of public schools in Connecticut.
What schools are Cos Cob School often compared to?
Cos Cob Schoolis often viewed alongside schools like International School At Dundee by visitors of our site.
What percent of students have achieved state testing proficiency in math and reading?
60-64% of students have achieved math proficiency (compared to the 40% CT state average), while 65-69% of students have achieved reading proficiency (compared to the 50% CT state average).
How many students attend Cos Cob School?
337 students attend Cos Cob School.
What is the racial composition of the student body?
66% of Cos Cob School students are White, 15% of students are Hispanic, 10% of students are Asian, 8% of students are Two or more races, and 1% of students are Black.
What is the student:teacher ratio of Cos Cob School?
Cos Cob School has a student ration of 9:1, which is lower than the Connecticut state average of 12:1.
What grades does Cos Cob School offer ?
Cos Cob School offers enrollment in grades Kindergarten-5 (offers virtual instruction).
What school district is Cos Cob School part of?
Cos Cob School is part of Greenwich School District.

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Quick Stats (2024-25)

  • School Type: Magnet School
  • Grades: Kindergarten-5
  • Enrollment: 337 students
  • Student:Teacher Ratio: 9:1
  • Minority Enrollment: 34%
  • : Top 30%
  • : 60-64% (Top 30%)
  • : 65-69% (Top 30%)
  • : 55-59% (Top 50%)
  • Source: National Center for Education Statistics (NCES), CT Dept. of Education

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