Re: kakashi an asshole?
someone above said its like math class. i disagree think of it more like sports or martial arts. yes you have your coach/teacher but you have others too that help. football/baseball team coach and specialist coach. same thing in martial arts if you advance yourself like that. there will be your instructor and maybe some that can help you with your own specific goals weapons skilled moves etc.
kakashi in the past taught him as much as he could and was satisfied. then jiraya takes over and helps him more.