What happens to Rose in her first bodyguard class after her return?

The teacher brings her up to the front of the class, and berates her for running away with Lissa. He lectures her on the dangers of the powerful Strigoi vampires, who would live to kill them both. Rose insists that the world is not as dangerous as the staff say that it is, so the teacher quizzes her on all the techniques and training she has missed out on. To further show how far behind Rose has fallen, she spars with her old friend Mason, and is beaten with little effort.