I think it's important to clarify my last quote. I did not mean to say that significant increases are not possible, only that they are not common. I would venture to say that the average test taker's score does not fluctuate more than 5-6 points with each testing. Also, for every person that posts on this board and says they scored more than ten points higher, there are 10 more who scored lower the second time around. Study hard (timed, full length tests) and good luck. A small improvement (5 points) will work wonders for your chance of admission to most schools.