Admissions Scores:
a=5, b=4, c=3, d=2, e=1
do u mean this?
but as i know most of the u just use grade to show the entry requirment except polyu.
polyu use a system called cut off score and average score. for the calculation method of this system, u can refer to this web: http://www.polyu.edu.hk/as/ep_ft/explan.htm