My mom was concerned about grades and nothing else. It didn't matter if I was learning, as long as my grades w ere all A's. As a result, as soon as I hit a class where I actually ha d to study a bit, I didn't know how, and my grades dropped like a rock.
The other thing was that my IQ scores were made available for pretty much anyone who wanted them. So my teachers (not all, but quite a few) made me feel like I was slacking every time I did not understand something. When I went to college and majored in physics ( a field in which even the most talented need help pretty regularly) I didn't feel like I could ask for help, for fear of the professor thinking I was stupid - so I had a hard time adjusting.