Hypothesis: 800 is unattainable except by luck

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[This post is really only relevant for true test geeks.]

I'm a tutor. Here's my score history:

2006: 770 - 50Q, 47V
2009: 780 - 50Q, 48V
2012: 780 - 50Q, 48V (and 7 on IR - bah)

Now, I'd be quick to attribute my failure to advance beyond 780 to my own shortcomings and lack of disciplined practice, but there are seemingly no legitimate reports of scores of 800 in the last 8-10 years. (Here's one guy I found with two 51Q/51V/800s but his second 800 was in 2003: https://www.perfectgmat.com/pdf/gmat-score.pdf) There are even multiple reports of 51Q/51V on this site resulting in 790 (https://www.beatthegmat.com/from-710-in- ... 69188.html and https://www.beatthegmat.com/can-t-beat-t ... 87091.html). There are no reports on this site of section scores higher than 51Q or 51V.

So here's my hypothesis: as an artifact of adaptive testing or of changing scoring scales over time, it is possible to get every question right on the test and still fall short of 800.

Hubris comes in here: I really cannot conceive of how I could have missed any of the verbal questions, and I didn't guess on any of the math questions. I could be very wrong and merely arrogant. But then again, what if I didn't miss any of the verbal questions, yet because I randomly was assigned questions from the pool that were rated just a little less difficult than the hardest available, it was impossible for me to break through the 48V barrier?

Another piece of evidence is that I haven't seen anyone who has been able to manipulate the GMATPrep software into producing an 800 score.

I speculate that the testmakers know this but don't go out of their way to publicize it. If true, that's not unfair, because as explained elsewhere, everything from 740 on up is more or less equivalent for b-school admissions purposes (AKA the purpose for which the test is designed).

I'm not trying to frame this as some sort of conspiracy theory. The GMAT is really an excellent test that serves its purpose very well. But maybe those of us who hunt 800s for sport need to dial down our expectations.

Opinions? Disproof? Proof?
Source: — GMAT Strategy |

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by ksc1940 » Sat Jun 23, 2012 2:17 pm
The quant scaling theoretically goes up to 60, but i have never heard of anyone getting higher than a 51 so no idea why those scores are even there.

I know one person who got a 800; he told me that he's pretty sure he missed like 2 questions towards the very end, but apparently it did not affect his raw score becuase those questions were so hard that i'm assuming very few people got them correctly.

According to GMAC, about 30 test takers in the world get 800 each year.

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by mshecket » Sat Jun 23, 2012 6:55 pm
To clarify, my hypothesis isn't that there are no 800 scorers, it's that 800 scores are merely a subset of a larger group of test-takers who get every question right.

If someone truly missed two questions and still got an 800, that would effectively shoot down the hypothesis.

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by ksc1940 » Sun Jun 24, 2012 1:16 am
mshecket wrote:To clarify, my hypothesis isn't that there are no 800 scorers, it's that 800 scores are merely a subset of a larger group of test-takers who get every question right.

If someone truly missed two questions and still got an 800, that would effectively shoot down the hypothesis.

Right. I don't think it's random or by sheer luck. No one except the guys who work on the GMAT fully understand the algorithm. But based on the anecdotal evidence, my guess is that it's possible for someone to get a 790 with 51/51 split based on number of questions they missed and/or at what point in the exam they missed the questions. So it's totally feasible that in the quant section you have 2 people get 51, but one of them got every question right except the final one while the other person missed 3 questions towards the very end. It is possible then that the second person would be "downgraded" to a 790 even though his raw score is the same as the other guy. This is pure conjecture of course.

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by sunman » Mon Jun 25, 2012 4:24 am
This is so silly. People like you are ruining the curve for everyone else who is trying to do well on this test to actually get into business school (what it's originally intended for?) instead of taking the test repeatedly as a hobby -_-
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