When my son was 5 he was brought home from school one afternoon by his teacher. He looked like a neanderthal with a forehead twice normal size and rapidly going purple. Teacher said he had fallen off the climbing frame in PE. I said thanks for bringing him home (they'd had him lying down in the staff room for 3 hours!), bathed his head, gave him his tea and put him to bed - no concussion. Next day we spent all morning at the hospital where he was tested for a detached retina as he said he couldn't see properly but everything was fine and his forehead went down in about a week.
The thing is
1) we didn't sue the school
2) the hospital didn't suspect us of child abuse
3) no one tried to stop him climbing, jumping etc. in the future - or skateboarding, playing football/rugby/cricket, all of which injured him in one way or another from time to time.
4) he's still alive and well - and nearly 42
I think he was about 23 when he told me he hadn't fallen off the climbing frame - he'd dived off it.
