by esledge Sun Jun 24, 2012 7:24 pm
Hi zaur,
Is there any intentional correlation between our exams and Kaplan's? No, we develop our materials completely independently. Some scoring variation from one company's tests to another's is to be expected. In fact, even the official GRE has a standard error in scoring. What is relevant is how you progress from one test to another from a given source--that is the measure of your progress.
That said, as of June 11, we recalibrated our tests. Scoring for standardized tests like the GRE and GMAT is based partially on question difficulty, which is not a subjective measure. Difficulty is a function of how actual test takers respond to a given question (roughly, many get it right = "easy," many get it wrong = "hard"). We now have more data on our questions, which leads to more reliable scores.
I hope that helps.