#1 Most Diverse Private Schools in Milton, MA
Thacher Montessori School
Montessori school · Grades Pre-K–8
Largest group: 46% of students
Milton, MA
A-Overall grade67 students5 students per teacher
2026 lists
Most Diverse Private Schools in Milton, MA
Private schools in Milton, MA with the most varied mix of students. Top 6 of 6 schools.
#2 Most Diverse Private Schools in Milton, MA
Milton Academy
Independent school · Grades K–12
Largest group: 47% of students
Milton, MA
A+Overall grade1,030 students5 students per teacher
#3 Most Diverse Private Schools in Milton, MA
Fontbonne Academy
Independent Catholic school · Grades 7–12
Largest group: 47% of students
Milton, MA
A+Overall gradeAll girls317 students9 students per teacher
#4 Most Diverse Private Schools in Milton, MA
St. Mary of the Hills School
Diocesan school · Grades Pre-K–8
Largest group: 51% of students
Milton, MA
B+Overall grade175 students13 students per teacher
#5 Most Diverse Private Schools in Milton, MA
Delphi Academy
Independent school · Grades Pre-K–8
Largest group: 58% of students
Milton, MA
A+Overall grade118 students6 students per teacher
#6 Most Diverse Private Schools in Milton, MA
St. Agatha School
Parish school · Grades Pre-K–8
Largest group: 74% of students
Milton, MA
B+Overall grade253 students13 students per teacher
From official public records, updated October 2026.