Yeah, I pretty much bombed the diagnostic as well. I also don't remember my exact score, but I'm pretty sure it was in the mid-low twenties. Anyway, after taking Kaplan and basically doing all of their practice exams, etc., I improved by over 10 points! Don't worry now...they just try to scare you so that you'll work hard and then do well on the MCAT, and therefore think taking their course was worth the $1400!