I wonder what they mean by 'attack'? Pushing a bit? Smacking an arm, or a full attack resulting in injury? I think attacks on teachers is more common in schools than in FE where I teach. We do get a lot of bad behaviour but it's mainly mouthing off. A few years ago, one student, with no provocation except that I asked him not to eat his sandwich during the lesson, faced up to me and was very aggressive. It was very frightening then and only recently he was sent to prison for beating up a passer-by and leaving him in a permanent coma. Looks like I got a lucky escape.
I don't approve of the cane. It punishes behaviour without changing it.