We have all seen the classic movie "Home Alone" in which eight-year-old Kevin McCallister is accidentally left home alone while his family goes on Christmas vacation. In reality, the McCallister parents should have probably been charged with negligent supervision. Of course, that was just a movie. In Pennsylvania, there is no set age limit that allows a child to be legally left home alone. However, if a parent decides to leave a child home alone, that child is still the parent's responsibility. So that means if anything happens to the child, the parents can be charged with neglect.