#1 Private Schools with the Smallest Classes in Milton, MA
Milton Academy
Independent school · Grades K–12
5 students per teacher
Milton, MA
A+Overall grade1,030 students5 students per teacher
2026 lists
Private Schools with the Smallest Classes in Milton, MA
Private schools in Milton, MA with the fewest students per teacher (not counting preschools and special education schools). Top 6 of 6 schools.
#2 Private Schools with the Smallest Classes in Milton, MA
Thacher Montessori School
Montessori school · Grades Pre-K–8
5.2 students per teacher
Milton, MA
A-Overall grade67 students5 students per teacher
#3 Private Schools with the Smallest Classes in Milton, MA
Delphi Academy
Independent school · Grades Pre-K–8
6.1 students per teacher
Milton, MA
A+Overall grade118 students6 students per teacher
#4 Private Schools with the Smallest Classes in Milton, MA
Fontbonne Academy
Independent Catholic school · Grades 7–12
8.9 students per teacher
Milton, MA
A+Overall gradeAll girls317 students9 students per teacher
#5 Private Schools with the Smallest Classes in Milton, MA
St. Agatha School
Parish school · Grades Pre-K–8
12.5 students per teacher
Milton, MA
B+Overall grade253 students13 students per teacher
#6 Private Schools with the Smallest Classes in Milton, MA
St. Mary of the Hills School
Diocesan school · Grades Pre-K–8
13 students per teacher
Milton, MA
B+Overall grade175 students13 students per teacher
From official public records, updated October 2026.