[DonkBluffer]

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It came up in either 5 or 6 when Harry talks to Nick. People choose to remain or move on I think.

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Yeah I think it was after Sirius died. Harry rushes off to him while all the other students are having their end feast or something and Nick says he expected him to come, because people always do when they lose someone close to them. When people are not ready for death or too afraid of death then part of them remains behind, IIRC.


From that link someone gave earlier:
"Neville: At first we tried overt resistance -- questioning the Carrows in class, spray painting "Wolverines!" on walls, and using Weasley Wizard Wheezes in the halls, but they started torturing us, so we switched to guerilla performance art. Dressing up as You-Know-Who in clown makeup didn't go over well. They finally got fed up with it and tried to send me off to Azkaban, but I hid out in the Room of Requirements. Figured out how to get it to keep the Death Eaters and their minions out -- and how to get it to create a secret passage to The Hog's Head. Now we're leading an aggressive insurgency from within the school -- mostly hit and run tactics, kidnapping Slytherins and stuffing them in a vanishing cabinet, that sort of stuff. Soon the halls shall run red with the blood of Death Eaters!

Ron: Wow. Neville. You are hardcore. [censored] Henry Rollins.

Hermione: Yeah, it's a shame You-Know-Who decided Harry was the subject of the prophesy, because you'd make a much better hero to this series. All this time people have been stuck reading about us camping in the woods and wiping our asses with leaves, while you've been here doing interesting stuff.

Harry: What was that?

Hermione: Nothing.

Neville takes Harry aside and whispers: Why didn't you ever tell me being a bad-ass rebel leader made you a pussy magnet? I've been getting laid every night since I first stood up to Alecto. You would not believe what the Patil twins are like -- or maybe you would, since you and Ron took them to the Yule Ball. Though I have to say, never try anything with Luna.

Neville suddenly went crimson.

Neville: Not Luna. She has weird ideas about broomsticks.

"Whut?" Harry had the distinct impression that there were things he didn't understand."