The kindergarten has recently installed a new swing in their playground. It is shaped like a tyre with criss-cross rope in the middle. It had been installed directly over the top of 2 "safe landing ground blocks" that have a gap of approximately 15-20cm between them. my son was attempting to get off when a student had slowed it right down. His foot became lodged in that gap, the swing then knocked him over causing a severely broken (Spiral break) of his right Tibia. Wondering what the Kindergartens responsibilities are?