How is the UAI calculated across 11 units?? i mean, i understand that if you have 12, one subject (the one you recieved the least marks in) is not counted. But what is the scenario when you only have 11?

Each subject is worth x number of units (mostly 2). Each unit is worth 50 marks. Therefore for each 2 unit course you have 2 equal marks /50. Thus is it the 10 best unit marks out of 50 that are used e.g. 2 unit English - 80% = 2 x 40 2 unit Maths - 90% = 2 x 45 2 unit Modern - 96% =2 x 48 2 unit Geography - 94% = 2 x 47 2 unit Society - 88% = 2 x44 1 unit SOR - 46 Therefore - 2 units of English (2 x 40), 2 units of Modern (2 x 48), 2 units of Geography (2 x 47) , 1 unit SOR (1 x 46), 2 units of Maths (2 x 45) and 1 unit of Society (1 x 44) would count.

hey, my friend is ranked equal 3rd in chemistry, however he should not be, throughout the year, on my assessment sheets i wrote what each person got (only 6 in class) i added each up taking into account the weigting of each task, and the 2 people ranked equal 3rd are actually 5% different of the course different. my friend was willing to look past it if the other person ranked 'equal 3rd' did good in externals... we talked to her and he said she didnt
my friend is expecting 75-85% raw whilst other person is expecting <50% raw
another problem is, the person ranked second thinks he got around 55% =S
so my questions are:
-should my friend appeal (oh yea, at my school we have things called mentors ie teacher that are supposed to help us through the year, my chem teacher was that persons mentor thats was supposed to be 4th not equal 3rd) and get his rank back

-what impact will the guy who had rank 2 have on my friend?
-and if he should appeal or whatever its called, how do you do it, do you see the principal or the teacher that made the mistake
-also is my writing down the marks throughout the year good enough evidence?

thanks