<p>my understanding of the way CB curves all of their tests is by fitting it to a normal distrition so that a certain percent of the population recieves and 800, (or a 5 if it is AP tests), and a larger percentage gets a 700 (or a 4 for AP) ect. so the curve is infact after the test, and depends on the population of test takers. The real question is where the chinese, or whoever excert a great enough influence on the curve to skew it in a certain direction (up for CR and W, down for M).</p>