<p>My son’s a math major (addicted to it like crack as above posters call it), and he says that the upper div math grade distributions on every test are bimodal–not a normal distribution at all. There’s always one group clustered in the A+/A/A- range, and then one group clustered lower. How much lower depends upon the class. So basically there’s the group that ‘gets’ it, and the group that gets by. So if you find yourself ‘getting it’ you’ll be fine. Otherwise you’ll just have to put in a lot more work to come on the lower tail of the top group.</p>