/www.hindu.com/2011/05/26/stories/2011052657981500.htmAndhra Pradesh is also very SouthernRegarding Bihar, it is a nutcase with L.P. Yadav's terrible rule and cannot be taken as a good sample - also a source other than wiki would be good as wiki does not cite the source for your statement.I note that from your link the IIT guwahati has the lowest passrate, situated in the NE region.