To my exam-playing students whom I challenged in August to exams in October:
Here is how Trinity marks it (and you can find the same details and a LOT more on the Trinity site at http://www.trinitycollege.co.uk/resource/?id=3815):
22 points each, to a total of 66% of the exam
Your scales or studies:
Aux test 1: 10 points
Aux test 2: 10 points
(66 + 14 + 10 + 10 = 100)
Here’s how each piece gets marked:
1) Musical / notational accuracy (“me and the music”): How exactly correct you can play the piece (7 pts)
2) Technical facility (“me and my instrument”). How you have the instrument under control – for us violinists that would mean primarily bowing and intonation, and of course speed
3) Expression (“me and the audience”) encompasses all the dynamics, tempi and accents of the piece, the character thereof; also showmanship, interaction with the audience etc.
Best of luck for you all, shooting for impressive goals!