Teacher chat eh?
I'm a teacher too, don't have any on display. Other teachers sometimes make the odd comment on 'training days' - I find it funny as they can only see two tiny bits if I have a short sleeved t-shirt on, insta-judge and comment. Little do they know how far it goes (not huge in tattoo circles by any means!)
One girl I knew at work had a tat on her wrist, and went to the manager who was in control of uniform and staff dress code, showed them it, and said 'is this ok?' Made me laugh as I wish they'd said... Nope!