Good GRE SCore bad carrer academic record

Hey guys i would like to know if some one gets a score of around 1550 in GRE and has a bad academic record of engineering…coz i am posting this for my friend who had a drop from college and had to clear his backlogs and den proceed…but now his gre score in mock test comes around 1550 and toffel to about 290 each time…wot would behis changes of geting into a good post gradation programme???please reply