hni, your teacher is an a hole. No two ways about it. Like the one guy said, I have shot squirells with a field tip and they ran up the tree with an arrow in em and took like an hour to die! What would a deer do with a field point in it? There is a real chance that the wound could heal up and have part of the arrow still in him. Not all sucking chest wounds are fatal. It is beyond me why anyone would even consider shooting a deer with a field point. I think your teacher needs to be schooled (the old fashioned way).