OK. To answer your actual question, this is partially
- a function of luck at this level of performance. 168Q is most likely a -2 after all - get one more right and you would have gotten that dream score. Greg once got a 166V, and when he next took the test, he was back at his usual 170V. See Home - GregMat - GregMat
as well. - trying to keep the 5th percentile as high as possible. In other words, your expected performance should be “beyond a 170” so that even if something goes wrong, you’ll still be at a 170Q. Our practice tests tend to do this very well due to their fat curve - try to see if you can get two wrong or less on any of our three full practice tests.
- how well can you autopilot?
Beyond that,
- you cannot retake within three weeks of your last attempt, and
- regarding why I asked that question - there are programmes where a 168Q would be too low