New Headmaster/Headmistress at Hogwarts in Book 7? new heads of the houses?

[jelly92784]

No: HPFGUIDX 153741

Kathrin P wrote:
McGonagall is Headmistress in HBP after DD died (:-( ), but is she
the new Headmistress in general or only an interim headmistress?
Despite the fact that she was Deputy Headmistressback when DD was
Headmaster, that doesn't mean she is the new Headmistress right
away. Maybe she just does the job until the MoM finds a new (more
suitable - for them?) person for this job?

Katie wrote:
Well, I have a couple thoughts on this. First of all, I think the
MoM will be less involved in Hogwarts after what happened in the
last two books. DD has been proven right time and again, and now
that he's gone, I think Scrimgeour will have a hard time interfering
at Hogwarts. As DD once said, he'll never have left Hogwarts as long
as there are people that remain loyal to him are there.
So, with that said, I think McGonagall is a logical choice to remain
headmistress. I think maybe Lupin could make a return as head of
Gryffindor, or maybe Hagrid...
As for head of Slytherin...maybe Slughorn will resume his old
position.

Janelle: 
I agree that McGonagall seems to be the most likely choice for 
headmistress, as long as the Ministry doesn't interfere.  As others 
have brought up, this leaves the head of Gryfindor house open.  What 
hasn't been mentioned is that this also leaves the post of 
transfiguration teacher open.  We've assumed that McGonagall took 
over the job from Dumbledore when he became headmaster so it makes 
sense that she would not continue teaching.  Hagrid seems like a 
logical choice for head of Gryfindor except for the fact that it 
will be McGonagall making that decision and she doesn't seem to have 
too much confidence in Hagrid.  She could choose another existing 
teacher or else bring someone in to both teach transfiguration and 
become head of house, but who?  I believe JKR said in an interview 
that no new major characters would be introduced, so this will 
probably be either someone that we already know or an insignificant 
addition.  Any ideas?  Also, I think it's likely that Slughorn will 
stay on as potions teacher and head of Slytherin.  And as we've 
discussed before, the spot for Defense Against the Dark Arts 
obviously needs to be filled again.