The aftermath of the incident to drive out Peeves was somewhat unexpected. The Ministry of Magic's interference in Hogwarts was nowhere near as intense as anticipated; it could even be said that there was no interference at all, as though the Ministry had completely forgotten about Hogwarts.
With the detestable toad gone, Hogwarts was revitalized.
The once overbearing Investigation Action Group, having lost Dolores Umbridge's protection, became targets for everyone's retaliation. It was said they were found in the lavatories the very next day.
Though the incident to drive out Peeves had turned into a farce, it still had consequences. During Care of Magical Creatures class, everyone suddenly discovered that Hagrid had vanished.
Many students believed Hagrid's disappearance had something to do with Umbridge, because a group of Aurors had been lying at the school gates that day.
Before long, the whole matter became a story about the Ministry of Magic trying to secretly arrest Hagrid, only for Hagrid to beat them all flat.
Whatever the truth was, it could not change the fact that Hagrid had disappeared.
Harry and the other two even went to Albert because of it, only to be fobbed off with, "Hagrid is lying low for now."
Albert knew where Hagrid was hiding, but he had no intention of telling Harry and the others. There was no point in telling them anyway—they could not help.
While Umbridge was hospitalized, Professor McGonagall, as Deputy Headmistress, could only deal with the aftermath. She wrote to invite Professor Wilhelmina Grubbly-Plank to temporarily take over Care of Magical Creatures class.
What people talked about most was still the Umbridge statue in the Entrance Hall. Many Hogwarts students would stop before it, all curious whether the toad's statue would be left there for people to admire in the future. If