I think the stupidity is on your side.
First of all, israel has denied it was them and had no activity in that area at that time. The US is checking. So if it was a mistake by anyone, it was the US.
Plus Israel is not targeting civilians. If it was, perhaps more than one school would have been targeted? A hospital? Or similar.
On the other hand, Iran IS firing at civilian areas, quite happily and freely and they are also firign cluster munitions to try to maximise civilian deaths.
Is that state terrorsim with impunity to destabilise and destroy the country and terrorise the population?