Does your childs school call to tell you?

If they have hurt themselves? I only ask as when picking my son up today his teacher came up to me and said Marcus has hurt himself have the school called to tell you? i said no and she said oh let me show you, he has a large bump on his forehead the size of an egg which he did on the coat pegs at dinner trying to move out of the way of another child swinging his coat, i assume his teacher thought that they were going to call and tell me, but tbh his school is pretty lax on informing you if your child is injured while at school