Boston Arts Academy/Fenway High School, Fenway

The Fenway High School was founded in 1983 as a separate academic program for 90 students who were disengaged from high school. In 1998, after becoming a full-fledged Pilot school, it moved to 174 Ipswich Street, which it shares with the Boston Arts Academy. The Arts Academy is Boston's only public high school for the visual and performing arts. It was founded in 1998.

I wonder what the building was originally?

References:
Fenway High School website
Boston Arts Academy website