Ok, so I'm curious about something.
In theory, I totally agree that exam scores are based on your own performance, and everyone else's doesn't matter, and everyone uses the same books, etc. I also buy the "cream always rises to the top" theory where top schools have top students who have gotten top MCAT scores and are therefore top standardized test takers. Ok.
Now, I'm making the assumption that at least SOME of the scores in the list often-quoted here on SDN are accurate, + or - a few points. You may of course reject this assumption altogether, in which case my point is moot.
However, if you do accept that assumption, what do you think leads some schools to have dependably high averages every year? Sure, they tend to be the "top schools", but if you think about it, Wash U always has the super-bookish students with the absurd MCAT scores, and their step 1 average isn't the highest according to the list (which, again, may be inaccurate). If their students have the best chance of getting high scores to begin with, but other schools beat them more than once or twice, why do you think that is? (btw I'm absolutely not saying Wash U's averages are low or whatever, I'm just using the example of the biggest number-ho school)
Moreover, if a med school changes its curriculum at some point, and the new students of that curriculum have an average Step 1 score that's much higher than the year before's, can you still make the assumption that the curriculum played no part in that jump? Last year, when I was applying to schools and they had just changed their curriculum, their professors/deans/admission people always made comments like "we're waiting on the step 1 scores for the first people with the new curriculum to see how it's working out" or "we're confident that the changes will show up in higher step 1 scores", which means that the administration and faculty of the med school seem to believe they have a part in shaping those average scores.
Sorry for the long-winded point, but I guess I'm just wondering why the dogma is so much anti-curriculum here when my own common sense and people I've spoken to at various schools seem to disagree.