Definitely one of those where "less is more" - you can write your own story around the scene before you...
Very smartly turned out - probably one of the girls who never gets into trouble for anything. Certainly never found herself in the head's office before. But she knows she's in big trouble this time. She knows of other girls being caught for the same thing who were given the cane. One girl in her own class got six of the best just last term for much the same things and she saw the marks on that girl's bottom when they were in the changing room for PE. Is she going to get the same, or if she turns on the tears, and is suitably apologetic, might her previous good record save her? And either way, is he going to tell her parents because that would be really embarrassing...
(Sorry it's a few days late due to technical issues. And I'm afraid I don't know the original source or if there are any more images from this scene.)