I have yet to see proof that the U.S. hit a school, especially purposely.
As for sticks and stones, Iran has acted with far more aggression than that, and they have been spreading, rewarding, growing, and exporting that threat for decades. Against U.S. interests and against U.S. allies.
When I see you hold Iran as accountable for killing tens of thousands of their own people for protesting, including hanging them in the streets. . . as passionately as you hold the U.S. accountable for ALLEGED collateral damage?
You might start to get my consideration of your POV.