Freedom of Nose piercing

This article is about a young 14 year old girl named Ariana Lacono who was suspended from her school for having a nose piercing. She argued the 1st Amendment and that she had the right of freedom of religion and that the school had no right to suspend her from her school. I believe having a nose piercing really cant offend a school in any way. Does the nose piercing slow down your reading? Does the nose piercing make you learn slower? I believe that the school really has no reason to be suspending her or any student at all.