We get up to 6 weeks, that said, most people take only about 5 and have a week to recover before 3rd year orientation. A study was published by Academic Medicine (Supplemental Issue 77 October 2002) that showed that actual scores are above predicted scores by 3-5 points no matter when you take the test. Those that scored the highest only used 3 weeks (and had 100% pass rate), but when adjusted using predicted score, the best scorers used 4-5 weeks. Those that used 6 weeks had a pass rate of 90%, but there was not a significant difference between any of the groups. The thinking is that those that take the Step in the first 3 weeks are those best prepared and those that study the best. If you're confused, go check it out using your online resources (or the actual journal) at school.