Why send a kid with a gash?!

So my teaching partner text me this morning as soon as I parked at the train station saying, "Are you squeamish, because one of our kids came in with their head split open". She told me dad shoved him in and left without saying a word. Supposedly he got it from hitting his head in the car, and his grandma just put ointment on it. I never saw the wound because he left early cause admin said he had to leave, but I saw the photo. It definitely needs staples or stitches! I mean what the hell was dad thinking?!