In Harry Potter And The Deathly Hallows Harry gos back to Hogwarts in the 29th chapter.
yes he does, but he does not in the Deathly Hallows
No. He goes to seek You Know Who and finds out about the Deathly Hallows.
Harry Potter and the Deathly Hallows Part 1 isn't set at Hogwarts and Professor McGonagall was still teaching there. She appears in the second half of the movie when Harry, Ron and Hermione go back to Hogwarts.
Ginny and Harry get back together in Chapter 24 of "Harry Potter and the Deathly Hallows," titled "The Wandmaker."
Harry, Ron, and Hermione didn't go to Hogwart's because of what they have to do was more important. They also knew if they went back they would be killed.
Ron goes with Harry to go and find Horcruxes. And then he leaves, but eventually comes back and saves Harry's life and destroys a Horcrux. Then later he helps the Order in the Battle at Hogwarts
Harry, along with Hermione and Ron, did not go back to Hogwarts and, instead, went on a hunt for the remaining horcruxes that Voldemort created. At one point, Harry wanted to search more for the Deathly Hallows, but Hermione stopped him from delving in too deeply into the topic, as they were trying to complete the mission Dumbledore gave them before his murder by Severus Snape.
No, they do make a reappearance of sorts, but they are not resurrected.
No.
No, he broke up with her in Half-Blood Prince to keep her safe (in the book only, not in the film. However they get back together after Deathly Hallows and are married in the epilogue.
Well he didn't really die, but yes.