Dedham High School is a public high school in Dedham, Massachusetts, United States, and a part of the Dedham Public Schools district. The school was founded in 1851 by the oldest public school system in the country.
Serving 719 students in grades 9-12, Dedham High School ranks in the top 20% of all schools in Massachusetts for overall test scores (math proficiency is top 20%, and reading proficiency is top 20%).
The percentage of students achieving proficiency in math is 65-69% (which is higher than the Massachusetts state average of 42%). The percentage of students achieving proficiency in reading/language arts is 60-64% (which is higher than the Massachusetts state average of 44%).
The student-teacher ratio of 10:1 is lower than the Massachusetts state level of 12:1.
Minority enrollment is 38% of the student body (majority Hispanic), which is lower than the Massachusetts state average of 49% (majority Hispanic).
Quick Facts (2026)
- Grades: 9-12
- Enrollment: 719 students
- Student-Teacher Ratio: 10:1
- Minority Enrollment: 38%
- Graduation Rate: 90-94% (Top 50% in MA)
- Overall Testing Rank: Top 20%
- Math Proficiency: 65-69% (Top 20%)
- Reading Proficiency: 60-64% (Top 20%)
- Science Proficiency: 55-59% (Top 30%)
- Source: National Center for Education Statistics (NCES), MA Dept. of Education
Top Rankings
Dedham High School ranks among the top 20% of public schools in Massachusetts for:
Category
Attribute
Overall Rank
Math Proficiency
Reading/Language Arts Proficiency
School Overview
Dedham High School's student population of 719 students has stayed relatively flat over five school years.
The teacher population of 69 teachers has grown by 13% over five school years.
Grades Offered
Grades 9-12
(Supplemental Virtual)
(Supplemental Virtual)
Total Students
719 students
Total Classroom Teachers
69 teachers
Year Founded
1851
Colors
Grey, Maroon
School Calendar
Campus Size
11.3878 acres (4.6085 ha)
Average Class Size
16 students
School Rankings
Dedham High School ranks within the top 20% of all 1,626 schools in Massachusetts (based off of combined math and reading proficiency testing data).
The diversity score of Dedham High School is 0.57, which is less than the diversity score at state average of 0.66. The school's diversity has stayed relatively flat over five school years.
Overall Testing Rank
#252 out of 1626 schools
(Top 20%)
(Top 20%)
Math Test Scores (% Proficient)
65-69%
42%
Reading/Language Arts Test Scores (% Proficient)
60-64%
44%
Science Test Scores (% Proficient)
55-59%
44%
Student-Teacher Ratio
10:1
12:1
American Indian
n/a
n/a
Asian
3%
8%
Hispanic
19%
26%
Black
12%
10%
White
62%
51%
Hawaiian
n/a
n/a
Two or more races
4%
5%
All Ethnic Groups
Graduation Rate
90-94%
90%
Participates in the National School Lunch Program (NSLP)
Yes
Eligible for Free Lunch
27%
34%
Eligible for Reduced Lunch
5%
4%
School Statewide Testing
School District Name
Source: National Center for Education Statistics (NCES), MA Dept. of Education
School Notes
- School Mascot: The Marauders
Frequently Asked Questions
What is Dedham High School's ranking?
Dedham High School is ranked #252 out of 1,626 schools, which ranks it among the top 20% of public schools in Massachusetts.
What schools are Dedham High School often compared to?
Dedham High Schoolis often viewed alongside schools like Canton High School by visitors of our site.
What percent of students have achieved state testing proficiency in math and reading?
65-69% of students have achieved math proficiency (compared to the 42% MA state average), while 60-64% of students have achieved reading proficiency (compared to the 44% MA state average).
What is the graduation rate of Dedham High School?
The graduation rate of Dedham High School is 90-94%, which is higher than the Massachusetts state average of 90%.
How many students attend Dedham High School?
719 students attend Dedham High School.
What is the racial composition of the student body?
62% of Dedham High School students are White, 19% of students are Hispanic, 12% of students are Black, 4% of students are Two or more races, and 3% of students are Asian.
What is the student-teacher ratio of Dedham High School?
Dedham High School has a student ration of 10:1, which is lower than the Massachusetts state average of 12:1.
What grades does Dedham High School offer ?
Dedham High School offers enrollment in grades 9-12 (Supplemental Virtual).
What school district is Dedham High School part of?
Dedham High School is part of Dedham School District.
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