<p>Atleast AP Chem and AP Calc have forms A and B...
how can it be fair, then? or are there seperate curves for each test?</p>
<p>Wrong. They tested that by offering two versions on US History, English Language, and English Literature. The results of the experiment (obviously) has shown that the two forms have potential to be diffirent in difficulty, therefore they're not doing it this year.</p>