Thus far we have completed an intense 3 month semester and are in the beginning of the med school courses (DRx).
We took Basic Sciences, a dissection Anatomy lab (was incredible), Physiology which is a lot of work (seriously, it's 8 hours less than the med school which they take over a year), a research course teaching you how to interpret literature and a clinical course that teaches you how to do a physical exam. My personal experience was that the work load leaves you little time to do anything else, but you will learn a tremendous amount.
We've only taken 1 med school exam thus far, but to my knowledge we have all done very well. It's still a lot of work, but not nearly as intense as the 1st semester. I'm very happy that we will have almost identical educations as the MDs and I think we will be well prepared for our rotations.
I'm very pleased with the program and would highly recommend it.
If you have any specific questions, just let me/us know.