I recently did a mock exam, I did it for Additional Science. I did Biology B4,B5,B6 exam, Chemistry C4,C5,C6 and Physics P4,P5,P6 exam as well. SO I did 3 exams. I have been looking for the grade boundaries for all the three exams being combined into one grade. I can't find it. I did the test for June 2013. I can only find the grade boundaries for the exams respectively. I found the Physics and Chemistry easy but found Biology slightly challenging. I only got a B out of it. This is worrying me as I need to get A*. After finding the two/three papers easy, I only got a B. This grade does not include my coursework.