A schoolteacher may engage in illegal sexual activities with one girl, and she may be too frightened to say anything, so he gets away with it.
The more girls that are involved then the risk of one of them saying something increases.
Fiona went to Millbrook Community School. She is mentioned among famous pupils on the FR website. There are a couple of references to cp in the memories and favorite teachers section. I don’t think we should necessarily assume that the teacher was a pervert. Fiona sounds as though she was a bit of a handful. A slippering was probably the only way of keeping her quiet.
I lived in Skem until I was 10yrs old at which time we moved to Southport. My home was 47 Liverpool Rd, opposite the paths to Ormskirk Rd and a couple of houses from White Moss Rd where my maternal grandparents lived.