One chance at SAT

<p>I have taken the ACT many times and was disappointed each time. I decided that I would take the SAT in December hoping I can perfect that. Is it at all possible to do this, especially since I am not as familiar with the SAT and I only have this one chance at the SAT because I am a senior hoping to apply to upper-tier universities? Any suggestions for dissecting everything possible on the SAT in five weeks?</p>