A question for all the parents out there: when (if ever) is it permissible for a teacher or other caregiver to raise their voice to your child? For them to say something like, "I am very angry because you disobeyed me"?

Also, in your reply, could you mention something about how old you or your kids are?

The rules of permissible discipline have changed a lot over the years. When I show off a museum exhibit on schools long ago, I have to explain to the children what the paddles were used for. (They were not used for boats!)

But this question arises from a personal issue, so I'd really like to know what people say.