I very much agree with this advice. Occasionally, I run into the likes of you and am thrilled when it works out, which isn't often. I do have one currently though so you never know and kept him on after the internship. School's fine but you need to be exposed in a realistic manner to what you desire for yourself.
If you should be lucky enough to find a mentor with talent you respect, it's bound to rub off, which is why you're there in the first place. Go somewhere you'd like to work and show them your spirit, work ethic etc... and it will be to both of your advantages. You need to pitch it like it will be a beneficial symbiotic relationship and such a deal for them.
There's no better teacher than working in a professional atmosphere and at a completely different pace and intensity in real time. Understand though that you'll learn anywhere you go. Even if it's how not to do something which can often be more valuable.
"In pursuit of joys untasted"
from Giuseppe Verdi's La Traviata