Meanwhile, look at what parents aren't doing to not kill their children.

The CDC keeps records of accidental deaths in children. The three largest categories (all vastly outnumbering homicide) are automobile accidents, poisoning (usually by prescription drugs) and drowning (which for young children is most often in a home swimming pool).

Most parents can't be arsed minimizing or eliminating their car usage, or keeping less pills around and taking proper care of them. And the small minority with a swimming pool are so attached to their status symbol that they refuse to see how likely it is to get them a Darwin Award.

Schools that act as irresponsibly as lethal parents do will get disciplinary action and get pilloried in the papers. How often do you see a parent get their mugshot in the crime section of the paper for taking their kid on a lethal, pointless car trip, leaving a bottle of painkillers on the kitchen table or operating a deathtrap pool?

In ancient Rome (until some point during the Republic) it was an absolute right for a father to kill his children while they were under 21. De facto, the US operates by the same code.