As to OPs question, a Jan score may be considered (a) at a large number of colleges for admission because they actually accept the Jan test even though app deadline may be early Jan (however an equally large number require testing be done by Dec if you want test considered for admission), (b) for scholarship programs even if test is too late for consideration in admission but whether that is true depends on each particular college (many will do that, some won't) and may even depend on scholarship (e.g., a college may have some scholarships that are determined even before Jan while others not until March or April.) .
As to second poster's question whether you need to retake SAT for purpose of admission really depends on colleges to which you intend to apply. You are likely fine for 95% of colleges but your SAT composite is on low side for some of the highest ranked colleges.
Last edited by drusba; 11-09-2012 at 01:53 PM.