Commonwealth School is an independent high school of about 155 students and 35 faculty members located at 151 Commonwealth Avenue in the Back Bay neighborhood of Boston, Massachusetts, United States. Commonwealth SchoolEstablished 1957Type Private coeducational secondaryFounder Charles E. Merrill Jr. Headmaster William D. WhartonStudents 150Grades 9–12Location Boston, Massachusetts, USAWebsite www. commschool. org



