Seegee:
They had a teacher who used to smack their bottoms with a rounders bat when they misbehaved
I think a typical rounders bat is a bit like a baseball bat and would not make an ideal spanking implement. At the school I attended though, the girls played the game with what looked more like a miniature cricket bat with a flat surface and WAS an ideal spanking implement. The spanking of schoolgirls was rare but I once saw the games mistress give three of the girls a sharp whack with that bat on the seat of their gym knickers. The games master somehow got hold of the bat and I had the 'privilege' of being the first one to receive it for forgetting my kit. It hurt like hell!