Ok, I should point out that the teacher in question is my friend. Not one of my closest (hence why I've not said anything as yet), but a friend nonetheless.
She is a secondary school teacher with a very distinctive/unusual name. It would not be that hard to search for her and find her on Facebook.
Her profile is completely 'public' so anyone (even those not her friend) can see what she types. Her profile (statuses AND pictures) are full of her getting drunk, semi-naked, saying how much she 'hates this job' and 'aaargggh can't stand this class' etc etc.
A few weeks ago, she told a mutual friend that a pupil had commented in class about something she (teacher) got up to at the weekend. She seemingly unaware that people can see EVERYTHING that she writes. Pupils, their parents, other teachers. Everyone, should they wish to. She deliberately does not accept friend requests from such people.
WIBU to advise her to make it private?! Or is this just poking my nose in?