One of two things is probably going on: 1: Hamparent feeds kid delusions about how good they are. Kid believes it, thinks they are the shit, thinks they are better than the people in that class. 2: Kid knows they aren't ready for an advanced class, but gets dragged along by hamparent who is trying to live vicariously through their kid, like those kiddie pageant moms on TV. They need their spawn to be a prodigy at something. Either way, I guarantee they left and hammom was all 'you're just too good for the class! They cant have you making everyone else look bad!'