Just giving an example:
Say for example if I'm ranked second in my school for chem, then I do the externals and I get a good state rank i.e top 20...lets just say 20 and the first guy gets a lower rank (lower mark), thus 'taking' my marks into his internals, wouldn't this overall lower my marks...
If lets say for example you come 6th out of your class but then you do the HSc and you come 20th in the state will you still retain your 20th position?