Ruptga
Lifer
They're correlated, but they're definitely not equivalent. It's very easy to game your classes and be an A-/B+ student while learning basically nothing of importance. That said, smart people will tend to have good grades and be successful at work. In my experience, if you consistently show up and aren't retarded it's pretty easy to be liked and fairly successful in a workplace, but even that's asking too much of a good chunk of the workforce.