Serving 1,413 students in grades 9-12, Chelmsford High School ranks in the top 10% 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 66% (which is higher than the Massachusetts state average of 41%). The percentage of students achieving proficiency in reading/language arts is 79% (which is higher 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 36% of the student body (majority Asian), which is lower than the Massachusetts state average of 47% (majority Hispanic).
Quick Stats (2025)
Grades: 9-12
Enrollment: 1,413 students
Student:Teacher Ratio: 14:1
Minority Enrollment: 36%
Graduation Rate
: 98% (Top 5% in MA)
Overall Testing Rank
: Top 10%
Math Proficiency
: 66% (Top 20%)
Reading Proficiency
: 79% (Top 5%)
Science Proficiency
: 68% (Top 20%)
Source: National Center for Education Statistics (NCES), MA Dept. of Education
Chelmsford High School ranks within the top 10% of all 1,631 schools in Massachusetts (based off of combined math and reading proficiency testing data).
The diversity score of Chelmsford High School is 0.55, 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.
What percent of students have achieved state testing proficiency in math and reading?
66% of students have achieved math proficiency (compared to the 41% MA state average), while 79% of students have achieved reading proficiency (compared to the 44% MA state average).
What is the graduation rate of Chelmsford High School?
The graduation rate of Chelmsford High School is 98%, which is higher than the Massachusetts state average of 90%.
How many students attend Chelmsford High School?
1,413 students attend Chelmsford High School.
What is the racial composition of the student body?
64% of Chelmsford High School students are White, 19% of students are Asian, 8% of students are Hispanic, 5% of students are Black, and 4% of students are Two or more races.
What is the student:teacher ratio of Chelmsford High School?
Chelmsford High School has a student ration of 14:1, which is higher than the Massachusetts state average of 12:1.
What grades does Chelmsford High School offer ?
Chelmsford High School offers enrollment in grades 9-12 (offers virtual instruction).
What school district is Chelmsford High School part of?
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Quick Stats (2025)
Grades: 9-12
Enrollment: 1,413 students
Student:Teacher Ratio: 14:1
Minority Enrollment: 36%
Graduation Rate
: 98% (Top 5%)
Overall Testing Rank
: Top 10%
Math Proficiency
: 66% (Top 20%)
Reading Proficiency
: 79% (Top 5%)
Science Proficiency
: 68% (Top 20%)
Source: National Center for Education Statistics (NCES), MA Dept. of Education
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