Injury action against school principal is dismissed, based on immunity

A Detroit parent sued her daughters' principal after both daughters were assaulted in separate incidents at school.  The parent claimed that after one of her twins was involved in an altercation, the second twin should have been sent home, also, because she was likely to be attacked by friends of the girl involved in the first altercation with the sibling.  The court pointed out that the principal is immune from ordinary negligence and responsible only for injuries resulting from "gross negligence."  The court concluded that the parent had not established any factual basis for arguing that the principal had been guilty of a "reckless disregard for a known risk of injuries."  It ruled that "reasonable jurors" could not "honestly" reach the conclusion that the principal had shown "a substantial lack of concern for whether an injury [would] result."