I think girls can keep secrets but yes, most boys are bad at it. That or they get the wink wink ok from the parents so it’s never reported unless she gets knocked up or there is a nasty breakup.It's crazy these things keep happening but then again I guess there are always going to be sick people in this world that don't think they'll get caught. Dunno why any teachers would think that teenage kids would be able to keep any inappropriate behavior a secret, they usually are the worst age group to trust they'd be able to use good judgement in first place and of all people a teacher should realize that too. I'm sure there are some rare instances someone has gotten away with it and was able to keep it a secret but the odds are probably really low
It wouldnt surprise me if the female teachers hooking up with teens were hooking up with older dudes when they were teens themselves and it was just never reported.