Ned's Declassified School Survival Guide.
as far is i know,this is true,because the series started when he was in the 7th grade,and in season 2,he was in the 8th grade,so now,he must've left James Polk middle school because by now,he'll be in High School,and they'll be absolutely no point in carry in on till he leaves high school,because by the time he's 16,he wont be bothered to follow rules from a crappy book.
also,i dont think that Ren & Stimpy is on air anymore,anyway,who watches it?
seriously,look me in the eye and say:"i watch Ren & Stimpy". i mean its awful.this one times i was flicking through the channels,and i went on Ren & Stimpy,and all it was,was Stimpy,bursting Rens butt-cheek with a needle,and the butt-cheek-skin hanging down like a burst balloon,would you actually want to watch something like that? and what grinds my shit is that it won all these awards like "best cartoon" and "best animated show of 2006".
Family Guy and Futurama were also cancelled,but came back on the air sooner or later.