Chelmsford High

At 200 Richardson Rd in North Chelmsford, Massachusetts, Chelmsford High operates as a high-enrollment high school. A total of 1,402 students attend the school, which covers grades 9 through 12. Against the 777-student average for high schools in Massachusetts, enrollment here is 80% higher.

Chelmsford, which runs Chelmsford High, has 8 schools and 5,068 students.

White students make up a majority at Chelmsford High, at 62%. Other students are 19% Asian, 9% Hispanic, 5% Black, and 4% multiracial. The school's diversity index is 56%, meaning two students picked at random have a 56% chance of belonging to different racial or ethnic groups.

Teachers at Chelmsford High total 100.3 full-time equivalents, and the ratio is 14.0:1. That is 9.4 students per teacher below the 23.4:1 average for high schools in Massachusetts.

allk12 grades Chelmsford High an A. The grade compares the school only with Massachusetts public high schools, because each state gives its own test.

Federal survey data for Middlesex County show that the median household income is $130,847, a bachelor's degree or higher is held by about 60% of adults, and the poverty rate is about 5%. Middlesex County is home to 386 public schools and about 215,896 public school students.

The shortest distance from Chelmsford High to another public school is about 0.2 miles, to Charles D Harrington. Other public schools within five miles: at least 8.

NCES describes the area around Chelmsford High as Suburb: Large, meaning in a suburban area outside a principal city, within an urbanized area with a population of 250,000 or more.

Enrollment has been fairly stable: 1,408 in 2020-21 and 1,402 in 2024-25.

Families, students, and staff can use this page to discuss school safety, transportation, and start times at Chelmsford High. Alumni can share how the school prepared them.