ManhattanGMAT CAT and GMATprep

If you have taken the ManhattanGMAT CAT, deduct at least 40 to 50 points from the actual score. These CAT's were introduced in the month of October/November. Until then ManhattanGMAT had non-adaptive tests. I ended up scoring 780/770 on the ManhattanGMAT CAT tests but this was far from reality when it came to the actual test. Many of my friends communicated the same message. So if you score a 780 on the CAT, expect a 720-730.

GMAT prep is close to what you score on the actual day. It is safe to expect +/- 20 points. Infact I scored lower in Quant on the actual GMAT. I took the GMAT twice and ended up scoring less in Quant in both attempts. I scored close to a 50 in GMATprep CAT's.