I'll take this opportunity to again advocate my Step 1/MCAT ratio as the true test of how well a school prepares students for Step 1. Baylor and UT-Southwestern will average a few points higher on Step 1 than UT-Houston, UT-San Antonio, Texas A&M and Texas Tech because they accept people who, on the average, have higher MCAT scores. It doesn't necessarily correlate to better teaching so much as it does to admitting better test takers/smarter individuals. All schools will have the outliers who score above 260 and all schools will prepare you to score well if you apply yourself.
My point is, don't think that just because a school boasts higher USMLE scores that you will receive better teaching/training there.