Ok, I believe that since naruto and sakura have been training under the "Legindary Sanin" and what not that two and a half years of rigorous training would definitely put them up to at least equivalent to a high chuunin level shinobi. As for actual rand I dont think one should speculate that. For all we know there were radical reforms affectection the Konoha's villige structure ( Though I kind of doubt it.) . Im not an expert or anything of the sort on the manga.. I have only read from where the TV series is right now till present.. (( I was very bored last night)) anyway to end my ramblings I kinda saw the dynamic of Naruto Sasuke and Sakura mimicing the Sanin and so far it seems to be serving true. Yeah rambling time to shut up..I look foward to seeing the plot develop from here.