Griswold High School is the only public secondary school in Griswold, Connecticut, for grades 9 to 12. In addition to students promoted from Griswold Middle School, the school also enrolls students from the nearby towns of Canterbury, Franklin, Lisbon, Norwich, Preston, Sprague, and Voluntown.
Serving 578 students in grades 9-12, Griswold High School ranks in the bottom 50% of all schools in Connecticut for overall test scores (math proficiency is bottom 50%, and reading proficiency is bottom 50%).
The percentage of students achieving proficiency in math is 25-29% (which is lower than the Connecticut state average of 41%). The percentage of students achieving proficiency in reading/language arts is 55-59% (which is higher than the Connecticut state average of 50%).
The student-teacher ratio of 11:1 is lower than the Connecticut state level of 12:1.
Minority enrollment is 27% of the student body (majority Hispanic), which is lower than the Connecticut state average of 53% (majority Hispanic).
Quick Facts (2025-26)
- Grades: 9-12
- Enrollment: 578 students
- Student-Teacher Ratio: 11:1
- Minority Enrollment: 27%
- Graduation Rate: 85-89% (Btm 50% in CT)
- Overall Testing Rank: Bottom 50%
- Math Proficiency: 25-29% (Btm 50%)
- Reading Proficiency: 55-59% (Top 50%)
- Science Proficiency: 55-59% (Top 50%)
- Source: National Center for Education Statistics (NCES), CT Dept. of Education
Top Rankings
Griswold High School ranks among the top 20% of public schools in Connecticut for:
Category
Attribute
Student Attention
School Overview
Griswold High School's student population of 578 students has grown by 11% over five school years.
The teacher population of 52 teachers has stayed relatively flat over five school years.
Grades Offered
Grades 9-12
(Supplemental Virtual)
(Supplemental Virtual)
Total Students
578 students
Gender %
Total Classroom Teachers
52 teachers
Year Founded
1936
Colors
White, Green
School Calendar
Last Day of School
Sat. May 30, 2026
School Motto
Compassionate, confident, creative, and resourceful members of society.
School Rankings
Griswold High School ranks within the bottom 50% of all 939 schools in Connecticut (based off of combined math and reading proficiency testing data).
The diversity score of Griswold High School is 0.44, 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
#527 out of 939 schools
(Bottom 50%)
(Bottom 50%)
Math Test Scores (% Proficient)
25-29%
41%
Reading/Language Arts Test Scores (% Proficient)
55-59%
50%
Science Test Scores (% Proficient)
55-59%
47%
Student-Teacher Ratio
11:1
12:1
American Indian
1%
n/a
Asian
2%
5%
Hispanic
15%
31%
Black
2%
12%
White
73%
47%
Hawaiian
n/a
n/a
Two or more races
7%
5%
All Ethnic Groups
Graduation Rate
85-89%
89%
Eligible for Free Lunch
41%
37%
Eligible for Reduced Lunch
10%
6%
School Statewide Testing
School District Name
Source: National Center for Education Statistics (NCES), CT Dept. of Education
School Notes
- School Mascot: Wolverine
Profile last updated: 02/09/2025
Frequently Asked Questions
What is Griswold High School's ranking?
Griswold High School is ranked #527 out of 939 schools, which ranks it among the bottom 50% of public schools in Connecticut.
What schools are Griswold High School often compared to?
Griswold High Schoolis often viewed alongside schools like Norwich Free Academy by visitors of our site.
What percent of students have achieved state testing proficiency in math and reading?
25-29% of students have achieved math proficiency (compared to the 41% CT state average), while 55-59% of students have achieved reading proficiency (compared to the 50% CT state average).
What is the graduation rate of Griswold High School?
The graduation rate of Griswold High School is 85-89%, which is lower than the Connecticut state average of 89%.
How many students attend Griswold High School?
578 students attend Griswold High School.
What is the racial composition of the student body?
73% of Griswold High School students are White, 15% of students are Hispanic, 7% of students are Two or more races, 2% of students are Asian, 2% of students are Black, and 1% of students are American Indian.
What is the student-teacher ratio of Griswold High School?
Griswold High School has a student ration of 11:1, which is lower than the Connecticut state average of 12:1.
What grades does Griswold High School offer ?
Griswold High School offers enrollment in grades 9-12 (Supplemental Virtual).
What school district is Griswold High School part of?
Griswold High School is part of Griswold School District.
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