I have been a Graduate Teaching Assistant since 1 year [3 semesters] and in my experience not all undergrad youth want to know the subject. They just want an "A". I have caught so many students cheating, and each time they come up with some excuse or the other. I don't want the matter to go to their parents because which I don't not want to deal with [because I may loose my funding]. For these reasons, it almost seems like its better to let the youth get away with few slip ups because they really don't care that we are thinking for their good. All they[well most] care for is a good grade.
But if I ever face a situation to need to meet a parent, I absolutely think teachers and parents should work together.