I'm afraid your thinking on this is roughly 60 years behind. Of course vehicular deaths are not "natural".
You don't don't seem to be reading what the OP is writing. They are clearly laying the blame at the feet of the people who decided to build 2 schools on opposite sides of a dangerous street. Where are you getting "it's no ones fault"
To blame the school placement (likely decided by the very same governmental body doing the street design) is the epitome of the problem here: "what are the pedestrians doing on my street".
Look, the schools are already there, no sense tearing them down now and traffic calming is a fine solution but it shouldn't have been like this in the first place. There are plenty of areas marked as too dangerous for pedestrians when it comes to zoning decisions and this should have been one of them.
It never was. The suggestion is "don't put kids in the few areas of the city specifically marked as dangerous".
It's like building a school inside of a river, watching kids drown, and suggesting the water is at fault and should get out of the way. Or building a school on an airport runway and complaining the noise scares the children and suggesting the airplanes are at fault and should land elsewhere.