Leros
Lifer
Not really... Go to a series of poor schools with mostly mediocre teachers and you'll find that's not true.
If you work hard in shitty school, you'll still learn a lot. If you don't work hard in an awesome school you won't learn anything (you might pass and graduate though).
In college, 95% of what you learn is not required by the work and is done on your own time.