St. John's Preparatory School (Massachusetts)

St. John's Preparatory School is a 6–12 private, Roman Catholic, college-preparatory school for boys located at 72 Spring Street, Danvers, Massachusetts, United States. It was established in 1907 by the Xaverian Brothers and is located in the Roman Catholic Archdiocese of Boston. It was formerly a combination commuter-boarding school but ended its residential program in 1975.

The athletic program has a longstanding rivalry with Catholic Conference competitor Xaverian Brothers High School. The other members of the Catholic Conference include Malden Catholic High School, Boston College High School, and Catholic Memorial High School. The hockey team won the Super 8 state title in 2015.