Got 590 in a Princeton review mock but how?

Yours is a common question.

Your scores are not based on how many questions you answer correctly; they're based on the level of difficulty of the questions you answer correctly/incorrectly.

To illustrate this, I'll share an experiment I performed.

When I was writing the article Taking the GMATPrep Practice Tests Multiple Times (https://www.gmatprepnow.com/articles/tak ... iple-times), I took GMATPrep Practice Test #1 four times, and each time I answered every second question correctly (I did this for the quant section only)

Given that I correctly answered exactly half of the questions each time, you'd expect my quant scores to be roughly the same for all 4 tests.

My 4 scaled scores were: 19, 23, 26 and 42

This represents a percentile range from approximately 8th percentile to the 63rd percentile.

So, don't worry about how many questions you answered correctly. It has little to do with your score.

Aside: If you're interested, we have a video explaining the GMAT scoring algorithm: https://www.gmatprepnow.com/module/gener ... es?id=1251

Cheers,
Brent