Serving 2,633 students in grades 9-12, Greenwich High School ranks in the top 20% of all schools in Connecticut for overall test scores (math proficiency is top 20%, and reading proficiency is top 20%).
The percentage of students achieving proficiency in math is 64% (which is higher than the Connecticut state average of 40%). The percentage of students achieving proficiency in reading/language arts is 79% (which is higher than the Connecticut state average of 50%).
The student:teacher ratio of 13:1 is higher than the Connecticut state level of 12:1.
Minority enrollment is 42% of the student body (majority Hispanic), which is lower than the Connecticut state average of 53% (majority Hispanic).
Quick Stats (2025)
Grades: 9-12
Enrollment: 2,633 students
Student:Teacher Ratio: 13:1
Minority Enrollment: 42%
Graduation Rate
: 97% (Top 10% in CT)
Overall Testing Rank
: Top 20%
Math Proficiency
: 64% (Top 20%)
Reading Proficiency
: 79% (Top 10%)
Science Proficiency
: 80% (Top 10%)
Source: National Center for Education Statistics (NCES), CT Dept. of Education
Greenwich High School ranks within the top 20% of all 942 schools in Connecticut (based off of combined math and reading proficiency testing data).
The diversity score of Greenwich High School is 0.60, which is less than the diversity score at state average of 0.68. The school's diversity has stayed relatively flat over five school years.
What percent of students have achieved state testing proficiency in math and reading?
64% of students have achieved math proficiency (compared to the 40% CT state average), while 79% of students have achieved reading proficiency (compared to the 50% CT state average).
What is the graduation rate of Greenwich High School?
The graduation rate of Greenwich High School is 97%, which is higher than the Connecticut state average of 89%.
How many students attend Greenwich High School?
2,633 students attend Greenwich High School.
What is the racial composition of the student body?
58% of Greenwich High School students are White, 25% of students are Hispanic, 8% of students are Asian, 6% of students are Two or more races, and 3% of students are Black.
What is the student:teacher ratio of Greenwich High School?
Greenwich High School has a student ration of 13:1, which is higher than the Connecticut state average of 12:1.
What grades does Greenwich High School offer ?
Greenwich High School offers enrollment in grades 9-12 (offers virtual instruction).
What school district is Greenwich High School part of?
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Quick Stats (2025)
Grades: 9-12
Enrollment: 2,633 students
Student:Teacher Ratio: 13:1
Minority Enrollment: 42%
Graduation Rate
: 97% (Top 10%)
Overall Testing Rank
: Top 20%
Math Proficiency
: 64% (Top 20%)
Reading Proficiency
: 79% (Top 10%)
Science Proficiency
: 80% (Top 10%)
Source: National Center for Education Statistics (NCES), CT Dept. of Education
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