Another bad fall in school

Received an SMS from my elder girl that she suffered a bad fall in school as I was driving :-(. Earlier this year my younger girl had suffered a bad fall too. She had ran into a concealed hole in the ground. This time the offense was a drain. The school filled up the hole to prevent further mishaps. As for this drain, I am puzzled how the accident happened. I hope it isn't a new threat. Will have to check and inform the school about it. My experience is unless a parent raise such issues with the school, nothing is done.

Update: About four hours later...picture of the wound via MMS from her, and complaining that it isn't clotting well.