Sorry, I forgot the point of the thread.
I don't think corporal punishment should be allowed in schools. I think teachers need more power than they currently do, but having the power to physically punish someone else's child (since we can see in this thread how wildly peoples' opinions on physical punishment differ) is not the way to go (also, because it gets used too often. Yes, caning a child for talking will get them to shut up and probably not talk again, but I don't like the idea of another adult striking [usually hard if we're talking about the cane, remember I define a smack as a relatively gentle affair] a child for such a lax reason).
I don't knwo what could give teachers that power aside from corporal punishment, but it is certainly not the way to go.
However, my views on parenting are slightly different, as mentioned in my previous post (where I think parents should still be allowed to smack children, but it should only be a final punishment for the worst behaviour and not a day-to-day occurence), see that for details.