It would depend on the situation, the child's age, and my relationship with the family. There have been times when I've told a child that either they could tell their parents what they did or I would. There have been times when I've corrected the behavior on the spot without notice to the parent. And there has been the rare occasion when I've told a parent what I observed without saying anything to the child.So as a parent/coach if someone saw your kid or one of your players hanging around unsavory characters or engaging in activities not age appropriate, (smoking, drinking, making out, riding in cars ((yes riding in cars)) ) would you want that person to speak to you? If you witnessed the behavior, would you say something to the coahc or the kid?
I would have all of the kids sign an agreement to disable all social media accounts during the season.