As a parent if this was done to my child I'd be down to that school and ripping out said 'teachers' organs with a spoon.
We could all sit outside on banana lounges discussing the best way to rebuild a 4WD transmission and agree, through shared stories of conquests supporting our assertions, that there is no basis to the proposition that those least assured of their persuasions are the first to condemn others for theirs.
If you need to hit kids to make them behave, you're in the wrong job. I saw a teacher hitting a kid in my school and I wrote a policy to stop it. It now doesn't happen in our school. I don't blame many kids for bad behaviour here when the style of teaching is often so boring. However there must be a better way of disciplining, starting with a bit more praise but really just by making lessons a bit more active and a hell of a lot more interesting.
A start : Smaller classroom size