No, they can call parents perfectly legally, but that's why P4B asked his question and why I urged you earlier to leave that part out on posts here. They generally don't call parents unless kids are under 18 and are wanting to let the parents know what their minor kids are up to.

Not sure what privacy laws you're referring to, Domluvz. If you can find me those laws relating to police encounters with minor teens or adult children still living at home with parents, I'd like to see them. You'll have a lot easier time finding information about the concept of attorney-client privilege or about medical privacy. If you're charged with a crime or a misdemeanor by public servants, that's public information, whether you want it to be or not.