I am a teacher working at the school where my girlfriend's little sister (14) attends. Recently there have been issues with the sister who has had sex with a 17 year old (he was her boyfriend believe it or not!) Now my girlfriend told me this information and I was really unsure whether I needed to pass it on to the AHT in charge of pastoral stuff. I really debated about whether to mention this to the school - the parents knew, but still did I have a legal obligation to say? I didn't want to be classed as unprofessional for withholding serious information about a pupil. Obviously I wouldn't have even hesitated if it was an average pupil in the school, it was because I knew her personally and knew the parents were already aware (obviously they didn't condone what she had done though.) Long story short the parents are FURIOUS and I'm not really certain why, the school weren't taking it further, but apparently I have "betrayed family secrets". Surely it was my duty to pass this information on? Or am I in the wrong?