honestly now, there are so many ways around this
for starters i think the fact that u didnt get up and crack the fvcker over the head with your chair is a touch sus, but regardless....
-if the notes were hand written, you can compare handwriting
-if they weren't you can compare the kind of toner used to print the notes, OR the kind of font etc. as people tend to have a preferred method of formatting
-if the guy was using notes in his exam, he was probably not the brightest of people, so chances are the quality of the notes is rubbish, and will not compare in any way to your ability
-besides which, your writing style would also be different, and your method of writing notes
dead set, there are that many ways around this problem, i am absolutely amazed you havent been making more noise over this
Uni/.