For those doing AQA-A physics (and maybe bio and chem), I gather most will do ISAs. But some take EMPA's which unlike ISA's, are externally marked. For those who aren't sure what EMPA involves, you get set two practical tasks (devised by the exam board) in which you have to fiddle around with the practical tools and make various measurements - you get marks for all of this. And then you have the a formal timed exam in which you'll be given questions asking you to do further analysis on your results, etc.
Because there is no specific date for doing these EMPA's (you get given a window between March and the middle of May), can't people cheat by asking their mates (who've done it before them) for heads up on what will come up?