It caused great delight to the boys when a girl age ten or eleven was called out and told to touch her toes and we had a grandstand view of the plimsoll being cracked down twice across the girls trousers like the boys, They found as the boys had don the slipper stings
I had the slipper four times at secondary school. On one occasion it was from a female teacher in private and on another it was from the PE mistress in front of a girls only class.
However, the other two occasions I got it from a male teacher in front of the class (mixed). I got one stoke across the seat of my skirt both times.