Vienna's Game

Seriously I got reincarnated into another world?! In front of my class nonetheless! As a teacher this is ridiculous, but at the same time, I get to stretch my legs again and enjoy my youth again, since I have the body of my young teenage self again, and I'm not afraid to use it! Except now I am stuck as a princess of the country that is nearing political turmoil... Well, I guess it's time to use my knowledge as a World History teacher to save this kingdom from plunging into civil war! As someone who is not from this world and has never learned how to talk back to their superiors, what could possibly go wrong?