I'm not sure many people care. Quite a few of the teachers at my school have them, even some of the older ones.Some of my administrators have tattoos. But we're also a district that requires that the tattoos be covered. One of our art teacher has to wear at least 3/4 sleeves to conceal his.

It might also depend on where your school is. Mine is in a semi-rural area. Very blue collar. Most of our parent probably have tattoos themselves.