Chelsea High

Chelsea High, a big 9-12 campus in Chelsea, Massachusetts, one of the schools within Chelsea, serves 1,649 students, covering grades 9 through 12. By comparison, Massachusetts's public schools average about 777 students each, so Chelsea High sits 112% larger than that benchmark.

Within Chelsea, which oversees 11 schools and 6,094 students, Chelsea High is one campus in the system.

Looking at the student body, Chelsea High shows that 89% of students identify as Hispanic, making the school strongly Hispanic-majority; the rest consists of 5% White, 4% Black. By comparison, Suffolk County as a whole is about 23% Hispanic, so the school skews meaningfully more Hispanic than its surroundings.

Looking at school resources, Chelsea High reports 126 full-time-equivalent teachers, putting the student-to-teacher ratio at about 13.1:1. That figure is tighter than the state norm's 23.4:1 average.

In the surrounding community, the surrounding county (Suffolk County) shows that the typical household earns roughly $95,631 per year, roughly 51% of adults have completed at least a four-year degree, and census figures put the poverty rate at about 11%. Chelsea High is one of 157 public schools in Suffolk County (combined enrollment of about 75,679 students).

The closest other public school is Chelsea Opportunity Academy, roughly 0.0 miles away. Counting just inside five miles, 8 other public schools cluster around Chelsea High.

The school occupies a residential site.

Over the past 7-year window. Over the past 7-year window, the student count ticked up 7%: 1,538 students in 2018 compared to 1,649 in 2025.

On the community side, posts here usually surface around school events, parent volunteer needs, and clubs. The community welcomes input from current and former families.