I have taken both of the GMAT Prep exams and received the following scores on the quant section:
Test 1: (before doing any timed practice sets): 38: 48th percentile
Test 2: (after doing lots of timed practice sets: 44: 66th percentile
Actual test: 36: 40th percentile.
On the two practice tests, I tried to simulate exam conditions as closely as possible (timed breaks, essay/IR, in a cubicle, etc.).
On the actual test I felt about the same as I did when I took test 2 (in fact, I even saw one of the same questions word for word???--I thought that wasn't supposed to happen). I'm wondering if the GMAT prep exam scoring is up to date?
Back to the drawing board for another month until I take the test again.