Just consult an american colleage regarding Startstart' daughter
my colleague said she can sue the school but wont get anything of it. he said it is more a case between kids but not startstart with school. if there was a mistake made the teacher, that was not sending startstart's daughter to nurse and got some ice on it.
Very importantly, he said bump shows up later not at the time when accident happens. It is exactly what I told startstart. It is the reason why the teacher ignored the poor girl later. she was not so cauitous to check her out later.
There was one person could help startstart if she really want to pursue this. That is the gym teacher. He, by startstart, obviously noticed the bump and communicated with the teacher. Startstart may want to find out what he will say about this case and start from there.
But it is not a right mentality to just assume the teacher purposely ignore the girl's bump. No one really buys it.