#1 Largest Private Schools in Watertown, MA
Star Academy for the Gifted and Talented
Independent school · Grades Pre-K–11
217 students
Watertown, MA
A-Overall grade217 students4 students per teacher
2026 lists
Largest Private Schools in Watertown, MA
The private schools in Watertown, MA with the most students. Top 5 of 5 schools.
#2 Largest Private Schools in Watertown, MA
Perkins School for the Blind
Special education school · Grades K–12
174 students
Watertown, MA
A+Overall grade174 students3 students per teacher
#3 Largest Private Schools in Watertown, MA
Jewish Community Day School, INC DBA JCDS Bostons
Jewish day school · Grades K–8
166 students
Watertown, MA
BOverall grade166 students6 students per teacher
#4 Largest Private Schools in Watertown, MA
Atrium School
Independent school · Grades Pre-K–8
110 students
Watertown, MA
A+Overall grade110 students5 students per teacher
#5 Largest Private Schools in Watertown, MA
St. Stephen's Armenian Elementary School
Religious school · Grades Pre-K–5
82 students
Watertown, MA
B+Overall grade82 students7 students per teacher
From official public records, updated October 2026.