Diamond Academy

Diamond Academy is a acadamy in Diamond City. It is where Penny goes to school, and presumably also where Kat & Ana go to school.

WarioWare: Smooth Moves
The auditorium of this school is seen in WarioWare: Smooth Moves. It was the place that hosted Penny in the Great Invent-off. For that particular event, there was a boxing ring and an audience that seemed to be made up of Mr. Game & Watchs.