Holliston High

Holliston High is one of the mid-tier secondary schools in Holliston, Massachusetts, operated by Holliston, with 809 students on its rolls from grades 9 through 12.

Holliston comprises 4 schools with combined enrollment of 2,689 students; Holliston High is among them.

For racial and ethnic makeup, Holliston High reports that White students make up the majority at 77%. Other groups include 9% Asian, 8% Hispanic, 4% multiracial. That is visibly more White than the county at large, where the share is closer to 67%.

On the income-and-resources front, Holliston High reports 65 full-time-equivalent teachers, putting the student-to-teacher ratio at about 12.4:1. That figure is tighter than the state norm's 23.4:1 average.

Zooming out to the county, census data for Middlesex County shows median household income runs about $130,847, about 60% of the adult population holds a bachelor's degree or above, and the poverty rate sits near 5%. In all, Middlesex County runs 386 public schools (combined enrollment of about 215,896 students), of which Holliston High is one.

Robert H. Adams Middle School is the nearest neighboring public school, about 1.0 miles from this campus. Within five miles, there are 8 other public schools.

The campus sits in a bedroom-community setting.

Five-year trend. Looking back 7 years, enrollment at Holliston High has remained close to its prior level, going from 797 students in 2018 to 809 in 2025. Over the same period, the White share contracted from 88% to 77%.

Within the allk12 community for this school, posts here usually surface around open house dates, ride-share offers, and field-trip permission slips. Anyone with firsthand experience at this school can post or comment.