The Chelsea High School is located in Chelsea, Massachusetts, United States and is the only public high school in Chelsea. It is a part of Chelsea Public Schools. Established in 1845, Chelsea High moved into its current school building in 1996.
Serving 1,680 students in grades 9-12, Chelsea High School ranks in the bottom 50% of all schools in Massachusetts for overall test scores (math proficiency is bottom 50%, and reading proficiency is bottom 50%).
The percentage of students achieving proficiency in math is 29% (which is lower than the Massachusetts state average of 41%). The percentage of students achieving proficiency in reading/language arts is 30% (which is lower than the Massachusetts state average of 44%).
The student:teacher ratio of 14:1 is higher than the Massachusetts state level of 12:1.
Minority enrollment is 95% of the student body (majority Hispanic), which is higher than the Massachusetts state average of 47% (majority Hispanic).
Quick Stats (2025)
- Grades: 9-12
- Enrollment: 1,680 students
- Student:Teacher Ratio: 14:1
- Minority Enrollment: 95%
- Graduation Rate: 76% (Btm 50% in MA)
- Overall Testing Rank: Bottom 50%
- Math Proficiency: 29% (Btm 50%)
- Reading Proficiency: 30% (Btm 50%)
- Science Proficiency: 28% (Btm 50%)
- Source: National Center for Education Statistics (NCES), MA Dept. of Education
Top Rankings
Chelsea High School ranks among the top 20% of public schools in Massachusetts for:
Category
Attribute
Most improved public schools
Percent Eligible For Free Lunch
School Overview
Chelsea High School's student population of 1,680 students has grown by 23% over five school years.
The teacher population of 116 teachers has stayed relatively flat over five school years.
Grades Offered
Grades 9-12
(Supplemental Virtual)
(Supplemental Virtual)
Total Students
1,680 students
Gender %
Total Classroom Teachers
116 teachers
Year Founded
1845
School Rankings
Chelsea High School ranks within the bottom 50% of all 1,631 schools in Massachusetts (based off of combined math and reading proficiency testing data).
The diversity score of Chelsea High School is 0.21, which is less than the diversity score at state average of 0.65. The school's diversity has stayed relatively flat over five school years.
Overall Testing Rank
#1202 out of 1631 schools
(Bottom 50%)
(Bottom 50%)
Math Test Scores (% Proficient)
29%
41%
Reading/Language Arts Test Scores (% Proficient)
30%
44%
Science Test Scores (% Proficient)
28%
44%
Student : Teacher Ratio
14:1
12:1
American Indian
n/a
n/a
Asian
1%
7%
Hispanic
89%
25%
Black
4%
10%
White
5%
53%
Hawaiian
n/a
n/a
Two or more races
1%
5%
All Ethnic Groups
Graduation Rate
76%
90%
Participates in the National School Lunch Program (NSLP)
Yes
Eligible for Free Lunch
66%
35%
Eligible for Reduced Lunch
7%
4%
School Statewide Testing
School District Name
Source: National Center for Education Statistics (NCES), MA Dept. of Education
School Notes
- School Mascot: Red Devil
Frequently Asked Questions
What is Chelsea High School's ranking?
Chelsea High School is ranked #1202 out of 1,631 schools, which ranks it among the bottom 50% of public schools in Massachusetts.
What percent of students have achieved state testing proficiency in math and reading?
29% of students have achieved math proficiency (compared to the 41% MA state average), while 30% of students have achieved reading proficiency (compared to the 44% MA state average).
What is the graduation rate of Chelsea High School?
The graduation rate of Chelsea High School is 76%, which is lower than the Massachusetts state average of 90%.
How many students attend Chelsea High School?
1,680 students attend Chelsea High School.
What is the racial composition of the student body?
89% of Chelsea High School students are Hispanic, 5% of students are White, 4% of students are Black, 1% of students are Asian, and 1% of students are Two or more races.
What is the student:teacher ratio of Chelsea High School?
Chelsea High School has a student ration of 14:1, which is higher than the Massachusetts state average of 12:1.
What grades does Chelsea High School offer ?
Chelsea High School offers enrollment in grades 9-12 (Supplemental Virtual).
What school district is Chelsea High School part of?
Chelsea High School is part of Chelsea School District.
School Reviews
Review Chelsea 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
Texas Schools: The Voucher/School Choice Debate
The issue of school choice and a voucher system is currently being revisited in Houston and across the state of Texas, with strong opinions on both sides of the debate.
Fuel Up to Play 60 Focuses on Integrating Fitness and Wellness into the School Day
What if NFL players came to your school? With the Fuel Up to Play 60 program, sponsored by the National Dairy Council and the NFL, nutrition and exercise are promoted during the school day. NFL players participate in the program by coming to schools and talking to students about fitness. Learn more about the program and some of the schools that are implementing it.
What Parents Need to Know About Lunch Shaming
Students all over the nation go hungry every day not because their schools don’t offer lunch, but because they refuse them to children with outstanding debts. Read on to learn about the horror that is lunch shaming and what can be done about it.
