if you still have time try my cramming method. just take whatever notes you have and re-type or re-write them. the act of typing or writing something down helps drill it into your head. its tedious, but effective. at least for me. You know ive been through a mega cram session when you see 2 or 3 copies of my notes
If it's multiple choice or true/false, I say **** it. Just Guess.
But if it's gonna have essay and fill in the blank, my the Lord have mercy on your soul.