Hi GMATbuster92,
I’m sorry to hear how things went with your GMAT, but 640 is not a total disaster, right? I mean, you scored a Q49, which matches the quant score of 50% of your practice tests, and your verbal is only four points lower than your best verbal score and two points higher than your worst from your practice exams. So, let’s try to look at the glass as half full rather than half empty. One important point to keep in mind is that you probably were not ready to take the GMAT when you did, since your highest practice test score was still 30+ points lower than your score goal.
Looking at your ESR, since you scored in the 61st, 51st, and 54th percentiles for Critical Reasoning, Reading Comprehension, and Sentence Correction, respectively, it’s clear that you need to improve in all three areas of verbal in order to raise your verbal score. Regarding the drop in your verbal score, it’s likely that in your preparation, you have been too focused on using patterns and rules to answer verbal questions and have not put sufficient energy into learning to use logic. Test-makers are always coming up with new ways to write questions, so if you’re too reliant on using past patterns instead of pure logic, you won’t correctly answer questions with twists that are different from the ones you saw while prepping. As a result, when you take the actual GMAT, you won't do as well answering verbal questions as you did when you were practicing. To score high in verbal, you have to identify the key concepts in questions and use logic to arrive at correct answers.
With all that said, leave your latest GMAT in the rearview, and focus on moving forward and improving your verbal skills so you can hit your GMAT score goal. You may find it helpful to read this article about
how to score a 700+ on the GMAT.