appeals ...how do they work?? Watch
But you won't need your appeals!
EDIT: Where near Glasgow are you from btw?
But I don't know much about how they operate, sorry.
So, say Candidate A was predicted a B but got a C in the exam, the SQA look at the rest of the class - what they were predicted and what they got in the final exam and if the rest of the class basically got what they were predicted by their teacher, Candidate A would get his mark bumped up to a B.
The candidates never know this, but the teachers get a little list telling them who has been graded this way.