No one cares about what his parents have or haven't taught him...
I'm not sure if you're actually disagreeing with me. You say no-one cares, so surely there's no reason to expect the bus driver to be different. If you want him to make sure each child gets off at the right stop, you have to give him the resources he needs to do that. If you don't do that, it's not going to happen. If the child also is unable to look after itself, the occasional lost child is the inevitable consequence. Don't blame the bus driver for the consequences of your own choices.
Blaming the bus driver is the same mind set that expects immediate government assistance during a disaster.