#1 Best Private Middle Schools in Berkshire County, MA
St. Agnes Academy
Parish school · Grades Pre-K–8
Smaller classes than 93% of Catholic schools in Massachusetts
Dalton, MA
A+Overall grade106 students7 students per teacher
2026 lists
Best Private Middle Schools in Berkshire County, MA
Private schools in Berkshire County, MA with middle-school grades and the highest overall grades. Top 7 of 7 schools.
#2 Best Private Middle Schools in Berkshire County, MA
Pine Cobble School
Independent school · Grades Pre-K–8
Smaller classes than 80% of independent schools in Massachusetts
Williamstown, MA
A+Overall grade85 students4 students per teacher
#3 Best Private Middle Schools in Berkshire County, MA
St. Mary's School
Parish school · Grades Pre-K–8
Smaller classes than 76% of Catholic schools in Massachusetts
Lee, MA
AOverall grade90 students9 students per teacher
#4 Best Private Middle Schools in Berkshire County, MA
St. Stanislaus Kostka School
Diocesan school · Grades Pre-K–8
Serving families in Adams since at least 2011
Adams, MA
B+Overall grade96 students11 students per teacher
#5 Best Private Middle Schools in Berkshire County, MA
The Montessori School of the Berkshires
Montessori school · Grades Pre-K–8
Growing: enrollment up 19% since 2011–12
Lenox Dale, MA
B+Overall grade69 students6 students per teacher
#6 Best Private Middle Schools in Berkshire County, MA
Berkshire Country Day School
Independent school · Grades Pre-K–8
Small classes: about 7 students per teacher
Stockbridge, MA
B+Overall grade72 students7 students per teacher
#7 Best Private Middle Schools in Berkshire County, MA
Berkshire Waldorf School
Alternative school · Grades Pre-K–8
Small classes: about 8 students per teacher
Great Barrington, MA
BOverall grade166 students8 students per teacher
Grades compare each school's official facts, such as class size, how long it has served families and where graduates go, with similar schools. They're a starting point: visit, ask questions and trust what you see.