my point is that you can’t force the kids to learn a trade their parents don’t want them to learn (it’s the parents job to teach them a trade, it’s an explicit gemara in the 4th perek of kiddushin)
Being that in many schools, that is the only trade taught (Begging/Panhandling), and the parents send their children to these schools, I can only assume that the parents are farming out their responsibilities (for pay, or for others’ pay, keeping to the trade taught) to the schools. Your explicit 1% has become much larger due to implicit acquiescence.