no they don't. They are payed to according the the amount of papers they mark so they would have to be in a hurry to mark a lot of papers to get the $$$
i'm going to be rehearsing over and over for my film which is due in 2016! I'm sure you all have heard about it!!! J.K Rowling has info if you were absent of the event :D
If you want to maximise your marks i highly do not recommend dot points. Just look at those James Ruse kids they are all using structured sentence to answer the question at 100% capacity. They are like gods descendants.