Hogwarts is in for a major house cleaning right after they question Dumbledore! The attack on the DoM was in Harry's fifth year. Meaning he took his owls. So they're going to be asking many questions about all five years and not liking the answers. I hope they go back to long before the first war with Riddle and ask about Grindy as well. The ol' brainless bearded wonder blunder started his planned conquest of the magical world well before the first world war. Regardless of what he think of himself and what other may think of him I see him as a Dark Lord masquerading as the leader of the light. After all, it seems everything he's done has been dark and self-serving.