#1 Private Schools with the Smallest Classes in Suffolk County, MA
Learning Project Elementary School
Independent school · Grades K–6
3.7 students per teacher
Boston, MA
A+Overall grade118 students4 students per teacher
2026 lists
Private Schools with the Smallest Classes in Suffolk County, MA
Private schools in Suffolk County, MA with the fewest students per teacher (not counting preschools and special education schools). Top 38 of 38 schools.
#2 Private Schools with the Smallest Classes in Suffolk County, MA
Commonwealth School
Independent school · Grades 9–12
3.9 students per teacher
Boston, MA
A+Overall grade154 students4 students per teacher
#3 Private Schools with the Smallest Classes in Suffolk County, MA
German International School Boston
Independent school · Grades Pre-K–12
4.2 students per teacher
Boston, MA
A+Overall grade256 students4 students per teacher
#4 Private Schools with the Smallest Classes in Suffolk County, MA
Kingsley Montessori School
Montessori school · Grades Pre-K–6
4.6 students per teacher
Boston, MA
AOverall grade184 students5 students per teacher
#5 Private Schools with the Smallest Classes in Suffolk County, MA
The Newman School
Independent school · Grades 7–12
5 students per teacher
Boston, MA
A+Overall grade251 students5 students per teacher
#6 Private Schools with the Smallest Classes in Suffolk County, MA
The Newman School
Independent school · Grades 7–12
5.4 students per teacher
Boston, MA
A+Overall grade244 students5 students per teacher
#7 Private Schools with the Smallest Classes in Suffolk County, MA
Bais Yaakov of Boston High School
Jewish day school · Grades 9–12
5.4 students per teacher
Brighton, MA
B+Overall gradeAll girls49 students5 students per teacher
#8 Private Schools with the Smallest Classes in Suffolk County, MA
Epiphany School
Episcopal school · Grades 5–8
5.6 students per teacher
Dorchester Center, MA
A+Overall grade84 students6 students per teacher
#9 Private Schools with the Smallest Classes in Suffolk County, MA
Meridian Academy
Independent school · Grades 6–12
5.9 students per teacher
Jamaica Plain, MA
AOverall grade88 students6 students per teacher
#10 Private Schools with the Smallest Classes in Suffolk County, MA
The Advent School
Independent school · Grades Pre-K–6
6 students per teacher
Boston, MA
AOverall grade161 students6 students per teacher
#11 Private Schools with the Smallest Classes in Suffolk County, MA
The Winsor School
Independent school · Grades 5–12
6.1 students per teacher
Boston, MA
A+Overall gradeAll girls475 students6 students per teacher
#12 Private Schools with the Smallest Classes in Suffolk County, MA
Boston Trinity Academy
Christian school (nondenominational) · Grades 6–12
6.7 students per teacher
Boston, MA
A+Overall grade238 students7 students per teacher
#13 Private Schools with the Smallest Classes in Suffolk County, MA
Boston University Academy
Independent school · Grades 9–12
6.7 students per teacher
Boston, MA
A+Overall grade233 students7 students per teacher
#14 Private Schools with the Smallest Classes in Suffolk County, MA
Mesivta High School of Greater Boston
Jewish day school · Grades 9–12
6.7 students per teacher
Brighton, MA
BOverall gradeAll boys50 students7 students per teacher
#15 Private Schools with the Smallest Classes in Suffolk County, MA
St. John School
Diocesan school · Grades Pre-K–8
6.8 students per teacher
Boston, MA
A+Overall grade121 students7 students per teacher
#16 Private Schools with the Smallest Classes in Suffolk County, MA
Neighborhood Schools
Independent school · Grades Pre-K–6
6.8 students per teacher
Jamaica Plain, MA
B+Overall grade48 students7 students per teacher
#17 Private Schools with the Smallest Classes in Suffolk County, MA
Nativity Preparatory School
Independent Catholic school · Grades 5–8
7.3 students per teacher
Jamaica Plain, MA
A+Overall gradeAll boys54 students7 students per teacher
#18 Private Schools with the Smallest Classes in Suffolk County, MA
Park Street School
Christian school (nondenominational) · Grades Pre-K–6
7.5 students per teacher
Boston, MA
A+Overall grade162 students8 students per teacher
#19 Private Schools with the Smallest Classes in Suffolk County, MA
Mother Caroline Academy & Education Center
Independent Catholic school · Grades 3–8
7.6 students per teacher
Dorchester, MA
AOverall gradeAll girls69 students8 students per teacher
#20 Private Schools with the Smallest Classes in Suffolk County, MA
Croft School
Independent school · Grades Pre-K–5
8.8 students per teacher
Jamaica Plain, MA
B-Overall grade320 students9 students per teacher
#21 Private Schools with the Smallest Classes in Suffolk County, MA
British International School of Boston
Independent school · Grades Pre-K–12
9.1 students per teacher
Boston, MA
B+Overall grade481 students9 students per teacher
#22 Private Schools with the Smallest Classes in Suffolk County, MA
Cathedral High School
Independent Catholic school · Grades 7–12
9.1 students per teacher
Boston, MA
A+Overall grade326 students9 students per teacher
#23 Private Schools with the Smallest Classes in Suffolk County, MA
Shaloh House Hebrew Day School
Jewish day school · Grades Pre-K–5
10.5 students per teacher
Brighton, MA
BOverall grade41 students11 students per teacher
#24 Private Schools with the Smallest Classes in Suffolk County, MA
St. John Paul II Catholic Academy Columbia Camp
Diocesan school · Grades Pre-K–8
11.3 students per teacher
Dorchester, MA
A+Overall grade214 students11 students per teacher
From official public records, updated October 2026.