In the 2025-26 school year, Millis Middle School had an enrollment of 285 students, per the Massachusetts Department of Elementary and Secondary Education.
This represents a 6.7% increase from the previous school year, when 267 students attended the school.
Among students enrolled in the 2025-26 school year, 50.2% were girls and 49.8% were boys.
The majority of enrolled students identified as white, making up 76.8% of Millis Middle School’s student body.
Millis Middle School is part of Millis Public Schools District, which has its main office in Millis.
Across Massachusetts, student enrollment in the 2025-26 school year totaled 900,487.
Massachusetts ranks sixth in the nation in per-pupil spending, spending nearly $25,000 per student, according to a 2026 Education Data Initiative report.
A 2026 WalletHub analysis found the Massachusetts education system placed first nationally, with rankings based on student performance, class size, funding, school safety and teacher credentials.
| School | Total Enrollment |
|---|---|
| Clyde F. Brown School | 597 |
| Millis High School | 284 |
| Millis Middle School | 285 |
| TIES | 3 |
| Millis Public Schools | 1,169 |
Information in this article was obtained from the Massachusetts Department of Elementary and Secondary Education. The source data can be found here.
