If a 5 year old is saying stuff like ‘I want to slit your throat and watch you bleed’ then the problem is not the kid or the school but this kids parents unless this kid is some kind of mini psychopath.
It continues to surprise me the lengths schools will go to avoid common sense responsibilities, while jumping on minor matters. For instance, if the little girl brought a Bible to school, or wore something with an American flag, or drew a picture of a gun, guess how fast the school would react. But a death threat against the same little girl? No big deal.