it's weird. wouldn't the teachers refer to each other by their first names when they were just around each other?

curtsey is what girls do to be polite. COURTESY is the word you should have used and means 'thanks to'.i think that everyone is out of character, and you can't borrow characters. and i could ask WHO FROM? do you want to confuse your readers? MAYBE i have never heard of harry potter.

it's pretty good, but perhaps just a little historically inaccurate.