McGonagall's excellent decision

[dan]

No: HPFGUIDX 173889

McGonagall did the best possible thing in sending away the entire 
Slytherin House as the battle unfolded.

1 - less chance of kids fighting kids, which is a win win situation
2 - less chance of kids facing their parents, or being caught between
their parents and other kids's parents, or other kids who stayed to fight
3 - opportunity for those who are "basically good" to get out without
compromising themselves, being targetted by their fellow housemates,
and generally causing more death or destruction or division
4 - a quick decision done with an sturdy hand is the only way this
could have been accomplished, dilly-dallying could have been costly

The basic wisdom and goodness, if you will, of this decision says a
lot about the Headmistress. And this decision matches in wisdom what
marshaling the desks did by wit.

dan