Hi. I'm currently a sophomore at Saint Louis University in the Medical Scholars program.
The program is not THAT difficult, but pre-med anywhere is pre-med, so yes, quite a few students do get cut.
I enjoy SLU very much. It has a reasonable social scene (it's very easy to stay away from, and it's also very easy to join). Also, it is quite easy to get help from professors, seeing as how they all have office hours and always welcome student's questions. Of course, you do have to take the initiative to meet with your professor...they will not seek you out if you don't ask for help first.
If you have any questions, feel free to ask!