New codes for 3.16.4

[corinthum]

After initial perusal of the remaining 3.16.4 categories, I've noticed 
a lot of overlap.  Could I get some codes renamed and added?

1) Rename main 3.16.4 category to "School Houses".

2) Add a new subcategory "Sorting process"

3) I think the "Sorting Hat" category, currently 3.16.4.1, should be 
moved under 3.8.6 Magical items.  I want to separate posts discussing 
the sorting process and decisions made by the hat from those discussing 
the hat as an entity.  If moved, I'd still like to review it, since 
many posts currently housed there will need to move to my new Sorting 
process category (I believe Laurasia is reviewing the rest of 3.8.6).

-Kelly