Dementors Guarding Hogwarts

[Carol]

"stacygalore" aksed:
> >
> > When did the dementors guard Hogwarts?  Was it just immediately
following the escape of Sirius Black, or did they remain there for
subsequent years?
> >
> 
bboyminn responded:
> 
> It was in Prisoner of Azkaban. Remember at the beginning feast,
Dumbledore, during his Welcome speech, reminds everyone to steer clear
of the Dementors.
> 
> So, they were at the school for most of that school year. I think at
the end of the school year they were withdrawn partly because that
attitude toward Sirius had changed, though not completely, and the 
likelihood that Sirius would continue to hang around was slim. 
> 
> Further, at the end of the school year, there was no need for the
Dementors to continue to guard the school.
> 
> So, that one full school year, but never after that.

>
Carol:

I agree that the Dementors guarded the school only in Harry's third
year, but, IIRC, they were withdrawn because they had tried to suck
out Harry's soul. "Never thought they'd attack an innocent boy," Fudge
says. Dumbledore, of course, never wanted them there in the first place.

Carol, apologizing for not looking up the reference, but it's near the
end of PoA