His school no longer seems the haven it had once been. Just walking around the Hogwarts grounds reminds Harry of his loss of Sirius. However, even if Hogwarts and Harry have both returned to their usual states, there have been fundamental changes to both of them. So Hogwarts looks much more like the school we know and love from the previous four books than it has for most of Book 5. In fact, all of the professors whose authority Professor Umbridge undermined – Hagrid, Professor McGonagall, and even Professor Trelawney – have returned to Hogwarts. After her run-in with centaurs and Dumbledore's undeniable proof that Voldemort has come back, Dumbledore has returned as Headmaster of Hogwarts School of Witchcraft and Wizardry. Professor Umbridge has also been vanquished. He has been restored to his usual position as the Boy Who Lived.
The newspaper calls Harry " A lone voice of truth perceived as unbalanced, yet never wavered in his story" (38.10), so Harry no longer has to suffer as an outcast in wizarding society. Order of the Phoenix begins with Harry trying desperately to overhear the news, so it is appropriate that it ends with news, too: the Daily Prophet has finally confirmed that Voldemort has risen again. As Hermione says, " hasn't really started yet But it won't be long now" (38.203). That's why the final chapter of Book 5 is called, "The Second War Begins": it may be the end of Book 5, but it's the beginning of the rest of the series, as the second war against Voldemort grows more open and bitter. As the fifth book in a seven-book series, Harry Potter and the Order of the Phoenix has to tie off all of the major plot arcs of the novel – Harry's resentment and anger at being in the spotlight, his estrangement from Dumbledore and his friends, and the corruption of the Ministry of Magic – while still leaving enough open-ended plot points to send us rushing to Book 6. One of the things we truly admire about J.K.