i think its so dodgy..ive put in 3 mates marks from '04 and their UAI's were around 10-15 points lower then what SAM scaled them 2 b...my advice;dont rely on SAM,it may impose fasle hopes!
well my sister did her hsc a couple years ago and it said shed get 100. she ended up getting like 98. and one of my friends sister in a different year put in her marks and it told her shed get like 97 or something, but she got 100. o_0
as far as accuracy goes its not very, but it does generally give a rough idea of how well ur gonna do i guess
It is quite accurate to the higher end of the UAI scale, moreso than to the lower end as there is less statistics for the admins to program in that level