Yvette rests a hand on her hips. "They determined that the assailant's ease of infiltration was not due to the headmistress's negligence, but the Order's betrayal. The knight-templar on guard that night let the man pass willingly, knowing his intention. The lead templar was furious."

The students already know something like this? Well...at least the Order isn't trying to cover anything up. They're taking the blame and punishing their own man after investigating on their own. That's as honest and honorable as you can get.