EMPOWERgmatRichC
Hi cgbear
To start, a 640 is a solid score - and it could be enough to get you into your first-choice School. As such, a retest might not be necessary. That having been said, when these types of score drops occur, the two likely "causes" involve either something that was unrealistic during practice or something that was surprising (or not accounted for) on Test Day. Before we discuss those potential issues, it would help if you could provide a bit more information on how you've been studying and your goals:
Studies:
1) How long have you studied?
2) What study materials have you used so far?
Goals:
3) What is your goal score?
4) When are you planning to apply to Business School?
5) What Schools are you planning to apply to?
GMAT assassins aren't born, they're made,
Rich
I think it would be things not accounted for on Test Day. There were a few quant questions that were "different" from what I've been practicing, and I think I made poor guesses on those. For example, I mostly studied coordinate geometry focusing on lines, rectangles, and triangles. But on Test Day, the equation of a circle came out. I wasn't sure how to tackle that. There were also few twists on probability and work problems, types of questions that I know I have a good foundation in, but somehow could not arrive at any of the answer choices on the screen. I also encountered questions that looked similar to IR questions, so that threw me off a bit. I did finish the test on time, so the lower score in Quant could not have been a time penalty.
The test center environment may have had some impact, as well. In all my practice exams, I made sure to take them at a quiet place without distractions. On Test Day, however, the person who was sitting next to me kept on making exasperated sounds and sighs of frustration, while noisily and frequently shifting his position on his seat... I did lose my focus at times because of that, especially in RC passages.
Overall, I was not really nervous, contrary to what I expected, but on questions that got me stumped, I had poor judgment to eliminate answer choices. I need to revise those concepts that gave me a tough time on Test Day, before putting in more practice.
Anyway, here are my responses to your queries:
Studies:
1) How long have you studied?
I studied for almost three months, about 3 to 4 hours per day.
2) What study materials have you used so far?
I used OG 2019, OG Quantitative 2017, OG Verbal 2017, GMAT Official Prep Practice Tests, and GMAT Official Practice Questions. As for review courses, I enrolled in
Target Test Prep, which did wonders to my Quant score, raising it from 35 to 48 or 49 in my practice tests. Even taking into account my score on Test Day, which was 44, I think that was a pretty good improvement. (On the very first time I attempted a GMAT test two years ago, I got a miserable 28 in it). Also, as a non-native speaker of English, I took the
e-GMAT course.
Goals:
3) What is your goal score?
My goal score is a 690, because of my top school of choice, although four of the schools I have chosen have lower GMAT score averages than that. (See #5).
4) When are you planning to apply to Business School?
I'll be applying next year 2020 by round 1 application deadline. I'm taking the GMAT as early as now, since I'll be a LOT busy in the next few months until I take my MBA in 2021.
5) What Schools are you planning to apply to?
I'll be applying to University of Washington, National University of Singapore, and Nanyang Technological University. I also plan to apply to Japanese business schools, Waseda Business School and Hitotsubashi University, as I am pursuing intensive Japanese language studies outside of work.