#1 Best Private Middle Schools in Milton, MA
Fontbonne Academy
Independent Catholic school · Grades 7–12
The only all-girls school in Milton
Milton, MA
A+Overall gradeAll girls317 students9 students per teacher
2026 lists
Best Private Middle Schools in Milton, MA
Private schools in Milton, MA with middle-school grades and the highest overall grades. Top 6 of 6 schools.
#2 Best Private Middle Schools in Milton, MA
Milton Academy
Independent school · Grades K–12
One of the 3 largest independent schools in Massachusetts
Milton, MA
A+Overall grade1,030 students5 students per teacher
#3 Best Private Middle Schools in Milton, MA
Delphi Academy
Independent school · Grades Pre-K–8
Small classes: about 6 students per teacher
Milton, MA
A+Overall grade118 students6 students per teacher
#4 Best Private Middle Schools in Milton, MA
Thacher Montessori School
Montessori school · Grades Pre-K–8
The only Montessori school in Milton
Milton, MA
A-Overall grade67 students5 students per teacher
#5 Best Private Middle Schools in Milton, MA
St. Mary of the Hills School
Diocesan school · Grades Pre-K–8
Serving families in Milton since at least 2011
Milton, MA
B+Overall grade175 students13 students per teacher
#6 Best Private Middle Schools in Milton, MA
St. Agatha School
Parish school · Grades Pre-K–8
Serving families in Milton since at least 2011
Milton, MA
B+Overall grade253 students13 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.