Here’s a real vintage sorority paddling photo from a student newspaper:
The image it’s cropped from (found on Outdoor Spanking) includes the newspaper clipping, which explains:
The photo above, taken in 1940 at the University of Utah, shows an actual sorority paddling. Five girls, guilty of offenses such as letting their skirts rise too high, are in position and awaiting the paddle. The pledge on the right has just been swatted.