Q: How many times are you allowed to take the GRE? And if you can retake it do they replace your score if you score higher than the first time you took the test?
A: You can take the GRE as many times as you want. Unfortunately, a higher test score will not replace a lower one. What they do is report all your GRE test scores to the schools. So, if you take it twice, they will report both scores. Schools vary in how they treat this data. Some of them will only count the highest score. Some average all your scores. Call the admissions office to find out how the school treats multiple GRE scores. If you think you did badly, you have the option of canceling the test, but you can only do this right after you take the test before it is scored.