I think most parents have a fixed mindset for any school work. They focus on the fact that the kid needs to have good grades so he could get in to a better school or get a better job. Rarely parents actually care what their kid has learned instead they just take a glance at the grades and think they know what's going on.
RE: Mindset: Raising Your IQ Through The Power Of Speech - Or How To Completely Ruin Your Children