There's an entire layer here which is missing, which you touch upon - everyone seems to be focussed on the police's stance on this - whereas I'm more curious as

There's an entire layer here which is missing, which you touch upon - everyone seems to be focussed on the police's stance on this - whereas I'm more curious as to why on earth a teacher would contact the police over a matter such as this. Fragile ego? Authority complex? Sadistic tendencies? Certainly it can't be that he had this pupil's best interests at heart - and therefore it seems equally likely that he has no pupils' interests at heart, and is there to collect a pay-check, and nothing more. If anything, the issue here is that people who really should not be teachers, are.