And yet is the tutor not equally responsible for failing his pupil?
Social contracts go both ways, and that's essentially what you're speaking of when you use a term like pupil which implies tutelage.
As far as parental guidance... if the parents are present, they should be a guiding presence in the child's life. Through thick and thin, no matter how high the tide gets. Social media doesn't raise children, people do.
...You don't have problematic children, do you? Because I feel for you, man, I was one of those for a long time. We can be a bltch to deal with.