Marlborough High

As a middle-of-the-pack senior high in Marlborough, Massachusetts, Marlborough High works with 985 students from grades 9 through 12, run under Marlborough. That puts it 27% above the typical public school in Massachusetts, which averages around 777 students.

Marlborough runs 7 schools in total, collectively educating 4,728 students. Marlborough High is one of those campuses.

On the student-mix side, Marlborough High lists that 62% of the student body identifies as Hispanic. Beyond that, the school records 27% White, 6% Black, 2% multiracial. By comparison, Middlesex County as a whole is about 9% Hispanic, so the school skews meaningfully more Hispanic than its surroundings.

On the income-and-resources front, On paper, Marlborough High has 87 full-time-equivalent teachers, translating to a class-load average of around 11.3:1. The state averages around 23.4:1, so this campus is tighter than the state norm typical.

In the surrounding community, Middlesex County reports that median household earnings sit near $130,847, 60% of adults hold a bachelor's degree or higher, and census figures put the poverty rate at about 5%. In all, Middlesex County runs 386 public schools (combined enrollment of about 215,896 students), of which Marlborough High is one.

Nearest neighbor: Goodnow Brothers Elementary School, around 0.1 miles off. Within five miles, there are 8 other public schools.

Geographically, the school is in an outer-ring area.

Trend over the last 7 years. Looking back 7 years, enrollment at Marlborough High has declined 11%, going from 1,110 students in 2018 to 985 in 2025. Over the same period, the White share declined from 46% to 27%.

Within the allk12 community for this school, the page collects discussion, questions, and updates around science fair prep, picture-day reminders, and bus-route questions. Posting is open to anyone connected to the school.