>_>....well not really the answer but a pretty good theory....>_> i think.
I think that the teachers gave Rock Lee a special treatment because is not his own fault but his body's fault that he wasn't able to controll or mold chakra. Also he's probaly the best taijutsu student in his class so the instructors would probaly knew that he could kick everyone of his classmate's arse without even trying so that why they let him pass.
also....maybe every instuctor could make up their own requirement for being a genin for example Iruka's requirement was for everyone to do a bunshin while Rock Lee's chunnin teacher have could have a differnt requirement. >_> Iruka can't be the only chunnin teacher there.
>_>....beside if you think about it have you ever seen anyone in Gai's team do any nin or genjutsu? The only one that use a ninjutsu was Gai when he summon Ninkama the turtle O_O
first of all lee can mold chakra and control it since he was able to walk on water... second of all, all teachers can only pass students that were able to do bunshin no jutsu, but if you remember correctly naruto passed by saving iruka.. oh and lee passed cause gai wanted lee to be his student cause there like the same.. <_<
bah....i suck. >_> i'm gonna leave theory making and other stuff to the smart ppl now. O_O and when did Lee walk on water? >_> i been watching the dub so far and never watched the japanese ones and i been reading all of the shippuden parts all the way to Deidera's death.