Life is pretty normal around here. No panic people or anything.
And I'm against the idea of go under the table myself. But the bad point about running outside is if everyone run outside at the same time, plus the earthquake and stuffs, floor might coslappe plus traffic jams. Means if it's only you then it's fine, but if it's your whole class then there will be more injuries.
As for debris, you can actually survive those as at least one of the wall will stay intact. Creating some gap between.

All swell guys, no worries :D