How do I open the bookcase?


Hint 1 of 4:
There are several screws holding it in place.

Hint 2 of 4:
You can't get a screwdriver, but there is something sharp and pointy
within the college.

Hint 3 of 4:
The arrowhead upstairs from the bookcase will be helpful.  But it's too
sharp to use by itself.

Hint 4 of 4:
You need padding.  Look downstairs near the lockers for some.