You're not exactly active enough to run it by you; I thought it'd be easier just to see if it was denied. lol

[quote]Students could duel in a specialized training room designed both for safety and entertainment, called The Stadium. [/quote]

[quote]Ever since implemented in the late 90's, the Stadium was used primarily in two ways: as a type of extracurricular boxing ring[/quote]

I don't see how that sounds mandatory. "could" and "entertainment" should set it as optional.