I have seen images that suggest that six of the school cane do a good deal of damage that lasts for up to several weeks and images that suggest that it produces no more than red stripes that disappear within an hour or so. There seems to be no consistent description or response to what is described as essentially the same experience.
I recognize that individual differences relative to pain tolerance and skin response is a factor or that even state of mind would create a variable response but still I would think that there wouldn’t be such a disparity in description.