Is there usually rules at school or a law agaisnt parents relieving themselves in the school toilets? My son was changing and going to the toilet when a man went in to use the urinal. My concern is that any stranger could walk in off the street and no one would know if they're a parent or not and I honestly don't think parents should be in there anyway unless it's an emergency with their child. There are other toilets at the school parents can use. Does anyones school have a rule?