McCarthy Middle School

Set in Chelmsford, Massachusetts, McCarthy Middle School is a medium-sized middle school, operated by Chelmsford. It hosts 808 students across grades 7 through 8. Compared to the state average of about 547 students per school, that is 48% above typical.

Chelmsford comprises 8 schools with combined enrollment of 5,068 students; McCarthy Middle School is among them.

On demographics, McCarthy Middle School shows that the largest single group is White, at 63% of enrollment. Other groups include 20% Asian, 8% Hispanic, 4% Black, 4% multiracial. That mix tracks the wider county fairly closely.

Looking at the economic backdrop, Staff filings list 65 full-time-equivalent teachers, which works out to roughly 12.4:1 students per teacher. The state averages around 11.5:1, so this campus is higher than the state norm typical.

Zooming out to the county, census data for Middlesex County shows the typical household earns roughly $130,847 per year, roughly 60% of adults have completed at least a four-year degree, and roughly 5% of residents live below the federal poverty line. McCarthy Middle School is one of 386 public schools in Middlesex County (combined enrollment of about 215,896 students).

The closest other public school is Chelmsford High, roughly 0.5 miles away. 8 of the 8 nearest public schools sit inside a five-mile radius.

The campus sits in a bedroom-community setting.

Looking at the recent track record. Over the past 7-year window, the student count showed little movement: 816 students in 2018 compared to 808 in 2025. Over the same period, the White share decreased from 75% to 63%.

In the discussion threads here, members of the McCarthy Middle School community share and discuss school events, parent volunteer needs, and clubs. Parents, students, alumni, and staff are welcome to weigh in.