I imagine that he didn’t need much persuasion to whack this young lady’s bottom. Her skirt was not raised but two sound strokes were given which must have hurt.
The only other time I saw girls whacked was during their games period. The girls must have been playing a game such as rounders as the gym mistress was holding what looked like a miniature cricket bat. A few of the girls were misbehaving and the teacher walked behind them and without making them bend over, gave each of them one good hard whack on the behind. They were only wearing gym knickers which didn’t offer much protection. All the boys in our class saw this as we were passing by on the way to our P.E. lesson led by our gym teacher. He must have been impressed because he procured a similar implement for use during the next lesson and guess who was the first one to feel it – me!