Harry nodded in agreement to Neville's comment. "Yeah, we will need a place inside the castle. Otherwise, a greenhouse would be an excellent option." Although he wasn't completely sold that he would make a great teacher, he knew that in all, he did have the most experience compared to many of his peers. For better or worse.

Blaise nodded in agreement with the others. It had been an adjustment to have the Boy Who Lived / "Defeater" of Voldemort in Slytherin of all houses. There had been students who doubted he was in the right house and had attempted to bully the boy. But to his credit, Harry had given them all a dose of their own medicine. Besides, if there was any student who was skilled enough to teach them defense, it was Harry Potter.

Hermione frowned as she considered the treatment of House Elves and everything they did at Hogwarts (and beyond!) but maybe now was not the time.

Harry considered his Mum's tip and nodded slowly. "I believe we know a house elf that has called Hogwarts his home recently so, we could go ask him." The last thing any of them would want is for that information to get back to Dumbledore or worse, Umbridge.

"That is a great idea, Ms. Evans. We'll do that," Hermione said. "If we can find a location, then we can focus on the other part. Creating or enchanting something that will allow us to notify everyone of when we meet."