Ronald Held wrote:
How did Kirk J stay in Starfleet Academy with his attitude, and almost graduated in 3 years?
Well we never actually see him during his normal course of studies. He could still have been the "stack of books with legs" that Gary Mitchell spoke of.
Sure, Kirk was an asshole when we first met him at the bar, but he could have swung completely around and gone all-out into his work when he was at the Academy.