What kind of courses for SAT?

<p>do you think it would be better if I took a class with around 15 people in it or got a more private tutor. Should I take a class or a tutor for each section or register for a class or tutor for a more overall improvement. I don't know if this will help but on the January SATs, I got a 550 reading, 580 math, 540 writing, and I would like to increase this score as much as possible. Please give me your opinion on how to do this most effectively.</p>