Go to a really noisy place, and take your notes with you. Plug your fingers in your ears and concentrate on your notes so damn hard until you can't actually hear what's going on (you may haer the noise but you should never be able to articulate what anyone else is saying). Recite in your head fifty billion times and mouth them if yuo haev to (just not when anyone's looking--they might think you a little kooky).
If they don't stay in your head, don't worry. Chant to yourself (inside your head): I will do this, I will do this, because I have to, beacuse I have to. *change the words if you want to--yeah, like a mantra. If it doesn't work first time, don't worry. Come back and keep repeating this until you actually muster enogh concentration to study (and retain) information inside your head. Soon, you'll find you can study and retain information that has been studied, in any sort of circumstance.
This is what helped me in my frees, because there was always at least 25 people in the general study area I was in. An added benefit is that, come exam time, you won't be so distracted or panicky by the sound of flicking papers and scrawling pens in a large exam hall, stuck with 100 (or more) other people [this was what really threw me off when exam time came--the pressure of sitting there with heaps of other people, and feeling their stress, coupled with my own, and not ignoring that tense atmosphere, which screwed up my concentration and my exams].
Hope that's some good.