It really depends on the training of staff, as well as common sense and equipment available to the students. When I was in school we were meant to do things like gymnastics. Now, and I'm not exaggerating, one of my classmates was a 6' 3" girl, who was expected to use the parallel bars when they were adjusted for the US average height of 5' 6". Right there is a problem. And yes, she got injured as a consequence because if she didn't participate she'd fail. Which is absurd. Another young lady was poorly supervised during cheerleading and ended up with a severe ankle fracture that required extensive surgery and metal screws to heal.
Throughout my years of school I had a recurring shoulder injury and again was threatened with failure if I didn't participate until I obtained a doctor's note stating that due to the severity of the injury, I should not participate. This was done, in part, because I was in excellent shape and was being pressured to participate in various sports that would make the injury much worse. Again, the 'threat' of failing was used to 'encourage' me to compete when I shouldn't.
Throughout my years of school I had a recurring shoulder injury and again was threatened with failure if I didn't participate until I obtained a doctor's note stating that due to the severity of the injury, I should not participate. This was done, in part, because I was in excellent shape and was being pressured to participate in various sports that would make the injury much worse. Again, the 'threat' of failing was used to 'encourage' me to compete when I shouldn't.