Watertown Town Of--school Dept, High School 50 Columbia St East Watertown, MA 02472 Phone : (617) 926-7760 Business Category Schools Government Offices-City Village & Twp Government Offices State & Local Government Offices & Public Schools Watertown High School 50 Columbia St Watertown, MA 02472 Phone : (617) 926-7760 Business Category Schools Schools-Public Schools-Senior High