and secondly, a medievalesque public school is such a stereotypically British environment that one expects the language to match.

During the Revolution, Salem witches were considerably more adept at battle magic than those taught at the institution that had been sucking magical knowledge out of the world for the previous 600 years. They also had the advantage of being able to train in the open since most Puritans were self-obliviating.

It wasn't until the 1890's that the school returned fully to Ministry control after the retirement of Headmaster Teetonka. Over a century of American control left its mark on the language and culture of Wizarding Britain, unfortunately the basis of powerful aboriginal magics remains restricted by edict to the students of the Salem Institute, El Dorado, or the University of Phoenix®.