Art teacher fire because the kid seen nude art in museum ?

I just read that teacher was fire from her job because the kids seen nude art during the trip to museum . Well here what I think : I am an Art teacher and yes it is difficult to teach this subject since most of the famous art of ancient Rome Greek very mostly nude . Now I understand that child is a child and some stuff should not be seen by such a young age . I also think that kids in today's world seen much more than half nude Greek statue . It is different to see nude as an Art and seen nude as a pornographic items . Now some updates well it was 5th grade and they have seen clasic art . People it is just an art ! not even contemporary that sometimes could be little dramatic but clasic ?! I don't see anything wrong with that . I'm sure that those 5th graders seen more on TV . Even Jesus used to be painted naked (then durring the ranaisance the artists were order to paint a cloth and cover some parts of the saints and Jesus . Also that someone told me , it saw a bare breast Mother Mary feeding Baby Jesus .Is that mean that the church should not allowed kids to look at that ?
It is difficult case am an Art teacher, I would be careful what am I showing to children but if such an accident happen that kids will see nude in Art I wouldn't act silly and try to cover up, instead I would explain why ancient Greeks and Romans usually sculp their statue nude .(idealistic body shapes for Gods ) I definitely disagree with the school board to fire this teacher . So I would like to post a question to all the people who will read this post . Is it better for child to see blood, violence on TV or piece of art that it happens to be nude ?