At my school (small town, Australia) the kids all get the smacked by hand or a wooden ruler on the thighs quite often. Marks from this are always gone the the day.
At home, we kids don’t wear clothes in Summer. I feel really sleek andslinky at home, and it’s much more comfortable. But Mum smacks us on the bare legs. She uses the strap on the boys’ buttocks and thighs when they are naughty. She really whips them, leaving bright red stripes which sometimes last a few days.
The kids can easily see the stripes on their thighs because of the short-shorts they wear. If the stripes are permanent, something must be really wrong with the teacher. I wouldn’t want a teacher like that!