Have you considered the difference between how we pick up and deliver money as opposed to how we pick up and deliver school children?
The armored car rolls up to the office or bank. One armed guard goes in while another carefully watches for trouble. The money is carefully transferred in or out of the truck. The vehicle is massive, bullet proof, and contains mostly sacks of paper.
School kids are sent to wait on the corner for a dull old bus with no seat belts. The bus is stuffed full of little children. They are disgorged at the school to walk about and find their classroom on their own.
Now I suppose it is true that money is stolen more often than children. I just can't shake the feeling that there is more to the story than that.