How do these parents managed their kids?

Question

How do parents of large families, those with 15 to 20 children, managed their kids? What did they do?

Answer 1

The older kids got pressed into service looking after the younger ones. Kind of a miserable way to teach responsibility to kids... by leaving them holding the bag.
The younger ones are basically abandoned because the parents are too tired to parent.

Answer 2

My grand mother had 10 kids and basically hearing stories from my mother to how they managed was... and excuse my language...

"They worked %#$@ING HARD"