I'm sorry you had a disappointing test experience. We would be happy to help however we can.
First, If you took the course or one of our Guided Self-Study packages, then you're eligible for a free Post-Exam Assessment. This is a phone call with an instructor to figure out what went wrong and come up with a plan to re-take the test. If this applies to you, please send an email to
studentservices@manhattangmat.com and request the Post-Exam Assessment. Do this right away! You'll get much better feedback this way because you'll have a live conversation with a teacher!
If you can do the above, then don't do the below until after you've met with that teacher (and only if you still feel you need to). If you aren't eligible for the above, then just start below.
You mentioned scoring 660 at least once on a practice test, but you scored 530 on the real test day. Read the below article, do the analysis described, and come back to let us know what you discovered:
http://www.beatthegmat.com/a/2009/10/26 ... went-wrongThat will give us an idea of why your real test score was so much lower than at least one of your practice tests. (Was the drop mostly due to your verbal score? Or was it both quant and verbal?)
Next, do the analysis described in the below article on your most recent MGMAT practice test:
http://www.manhattangmat.com/articles/e ... -part1.cfm(Note: if you took your last test under very non-official conditions, use the one before it instead or consider taking another one under official conditions.)
The above is going to take some work (it takes me about 30 to 45 minutes to review one student's test, and it will probably take you longer!). But you'll learn a lot that will help you know what you need to do to get better! (And, of course, we'll help you figure out what to do based upon your analysis.)