I am learning from my 14 year old DD that there are a *lot* of parents who just don't care/notice. She has one classmate who got a lip piercing. Her Mom didn't notice for 6 weeks. There are kids at her school who have gotten written up over 50 times (they brag about it) and the parents do nothing.
My youngest was bullied by a kid last year whose parents were like this. He was in trouble nearly every day, going to the office, etc (in 5th grade). He was even expelled from our school because a friend of his brought a BB gun to school and they were shooting it (in 3rd grade). No one can explain to me how this kid was allowed back at our school. The parents never did anything until my DH spoke up one morning when taking DD to school. He was in front of her in line (we had had to deal with her crying nearly everyday for *months* with the school doing nothing).
DH is 6'5" and can be scary even though he's the sweetest guy in the world. He explained very politely that he knows in the beginning of he year it was partly my DDs fault (she has a hard time keeping her mouth shut when she's angry, but she had long since stopped talking at school at all), but that this kid really needs to leave her alone. And if he steals her stuff again (which he and his cronies were doing) my DH would have him arrested. All of a sudden the parents were paying attention and threatened to have DH arrested. When told DH did nothing illegal and showed all the stuff the bully had done all year long, the school at least finally paid attention. The kid has never bullied DD since. And all his cronies backed off too.
But the parents still think 'Junior' can do no wrong.