I suspect that the intent is to ensure that the war goes on as long as possible by creating circumstances in which the Iranians will never stop fighting. Israel and the US need a constant state of war to protect their administrations and military industries. Doing things like this means that there will be no peace efforts any time soon. That is so obvious that is pretty much has to be the intent here.

EDIT: Worth noting that the US and Israel have actually struck MULTIPLE schools, hospitals, and dense residential structures. Whatever the reason, it is absolutely NOT an accident.