Serving 2,620 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 30%, and reading proficiency is top 30%).
The percentage of students achieving proficiency in math is 64% (which is higher than the Connecticut state average of 41%). 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 54% (majority Hispanic).
Quick Facts (26-27)
- Grades: 9-12
- Enrollment: 2,620 students
- Student-Teacher Ratio: 13:1
- Minority Enrollment: 42%
- Graduation Rate: 94% (Top 50% in CT)
- Overall Testing Rank: Top 20%
- Math Proficiency: 64% (Top 30%)
- Reading Proficiency: 79% (Top 10%)
- Science Proficiency: 80% (Top 10%)
- Attendance Zone: Greenwich High School's attendance zone encompasses the entire school district in Greenwich, CT, covering an area of approximately 51.8 square miles. Most families can expect a typical drive of 10-12 minutes to the school, with the furthest edge of the zone located 7.3 miles away.
- Source: National Center for Education Statistics (NCES), CT Dept. of Education
Top Rankings
Greenwich High School ranks among the top 20% of public schools in Connecticut for:
Category
Attribute
Overall Rank
Reading/Language Arts Proficiency
Science Proficiency
School Overview
Greenwich High School's student population of 2,620 students has stayed relatively flat over five school years.
The teacher population of 196 teachers has stayed relatively flat over five school years.
Grades Offered
Grades 9-12
(Supplemental Virtual)
(Supplemental Virtual)
Total Students
2,620 students
Showing 2015–2025. Full 39-year historical data available below ↓
Total Classroom Teachers
196 teachers
Showing 2015–2025. Full 39-year historical data available below ↓
School Rankings
Greenwich High School ranks within the top 20% of all 939 schools in Connecticut (based off of combined math and reading proficiency testing data).
The diversity score of Greenwich High School is 0.59, 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.
Overall Testing Rank
#127 out of 939 schools
(Top 20%)
(Top 20%)
Showing 2012–2023. Full 14-year historical data available below ↓
Math Test Scores (% Proficient)
64%
41%
Showing 2012–2023. Full 14-year historical data available below ↓
Reading/Language Arts Test Scores (% Proficient)
79%
50%
Showing 2011–2022. Full 13-year historical data available below ↓
Science Test Scores (% Proficient)
80%
47%
Student-Teacher Ratio
13:1
12:1
Showing 2015–2025. Full 39-year historical data available below ↓
Asian
8%
5%
Showing 2015–2025. Full 38-year historical data available below ↓
Hispanic
26%
32%
Showing 2015–2025. Full 38-year historical data available below ↓
Black
2%
12%
Showing 2015–2025. Full 38-year historical data available below ↓
White
58%
46%
Showing 2015–2025. Full 38-year historical data available below ↓
Two or more races
6%
5%
Showing 2015–2025. Full 15-year historical data available below ↓
All Ethnic Groups
Showing 2015–2025. Full 38-year historical data available below ↓
Graduation Rate
94%
88.2%
Showing 2014–2023. Full 13-year historical data available below ↓
Chronically Absent Students
(22-23)11%
19.3%
Eligible for Free Lunch
17%
38%
Showing 2015–2025. Full 34-year historical data available below ↓
Eligible for Reduced Lunch
6%
6%
Showing 2015–2025. Full 27-year historical data available below ↓
School Statewide Testing
School District Name
Sports
Colors
Black, Red
School Mascot
Cardinal
Source: National Center for Education Statistics (NCES), CT Dept. of Education
Frequently Asked Questions
What is Greenwich High School's ranking?
Greenwich High School is ranked #127 out of 939 schools, which ranks it among the top 20% of public schools in Connecticut.
What schools are Greenwich High School often compared to?
Greenwich High Schoolis often viewed alongside schools like Darien High School, New Canaan High School by visitors of our site.
What percent of students have achieved state testing proficiency in math and reading?
64% of students have achieved math proficiency (compared to the 41% 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 94%, which is higher than the Connecticut state average of 88.2%.
How many students attend Greenwich High School?
2,620 students attend Greenwich High School.
What is the racial composition of the student body?
58% of Greenwich High School students are White, 26% of students are Hispanic, 8% of students are Asian, 6% of students are Two or more races, and 2% 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 (Supplemental Virtual).
What school district is Greenwich High School part of?
Greenwich High School is part of Greenwich School District.
School Calendar
View the Greenwich High School yearly calendar below. Note key dates such as:
Event
Date
Veteran's Day - SCHOOLS OPEN
November 11, 2026 (Wednesday)
Thanksgiving Recess - Schools Closed
November 26, 2026 (Thursday)
Thanksgiving Recess - Schools Closed
November 27, 2026 (Friday)
Professional Learning Day - Schools Closed - K-8 Conferences
December 07, 2026 (Monday)
Holiday Recess - Schools Closed
December 23, 2026 (Wednesday)
School Reviews
Review Greenwich High School. Reviews should be a few sentences in length. Please include any comments on:
- Quality of academic programs, teachers, and facilities
- Availability of music, art, sports and other extracurricular activities
Recent Articles
When a Public School Cancels a Course Your Child Needs
Learn what parents can do when public schools cancel essential courses, including protecting graduation credits, finding approved alternatives, requesting substitutions, and preventing disruptions to college or career plans before deadlines.
Verify School Assignment Before Buying a House
Before buying a house, learn how to verify your child's assigned public school, check conflicting property listings, confirm enrollment eligibility, and avoid costly school assignment surprises before closing on a property.
School Bus Commute Times: What Parents Should Know
Discover how long school bus commutes really take, why routes vary, and what parents should ask about pickup times, student fatigue, transportation reliability, and daily schedules before choosing schools.
