Its really quite well written; it was really emotional. Just some small changes: In the third line of the 3rd stanza, it should be "They're afraid to go to school" , not "their".
also, i would recommend removing "but" in the 4th stanza.
and the last line of the piece tells the people to be crazy, which im sure you didnt mean. I think it should be "be sane" or "don't be insane"