Points System abuse by teachers (Snape)

[Eric Oppen]

No: HPFGUIDX 27419

You know, I kind of think that one big weakness of the "points for houses"
system that Hogwarts uses is that it lays itself open to abuse by teachers,
and that Snape in particular is guilty of this sort of abuse.  When he hands
out unearned points to Slytherins in Potions classes and elsewhere, he is
IMO acting unethically.  Professor McGonagal is much more ethical, as when
she takes fifty points off Gryffindor, her own house, when the Boy Who Lived
becomes The Boy Who Got Caught in PS/SS.

I mean, can you imagine what would've happened if Gilderoy Lockhart (that
preening git) had been in charge of a House?