From Quora: Answer to "If I have a 1270/1600 SAT, would paying for a prep course help me get up to a 1400/1600?"
A prep course could work, but you could also get a private tutor (like me) for about the same money, which would give you individualized attention. Also, as JJ Bhutto posted, you can prepare essentially for free using Khan Academy videos (and lots of others, including the ones on my YouTube channel- search on “John Linneball Tutoring”) and the downloadable/online practice SATs available at the College Board site : SAT Practice Tests
Author: John Linneball Who did you think? ;-)
I'm the proprietor and only tutor for this business; that's why I named it after me.