How does the USMLE or COMLEX standardize a test that is given multiple times a year? Do they only develop a bell shape curve for that day/week of test takers or do they have a plethora of questions that have been used in the pass with good score values to base a grading scale from? Hypothetically, say an average med. student took the test on the same day as a bunch of freakishly smart med students, his score would be lower than normal if they based it on just one day of testing. However if they had a Q bank of 5,000 qestions which had been answered on a regular bases they would be able to judge if somone correctly identified 80% of the questions, and the average student would not have to worry about being compared to the freaks who identified 100% of the questions (they would be outliers) on that one day. Would someone with some insight set me straight.