Also, I'd like to point out that in FY02 we had ~100 people selected for MECEP, as compared to last year's 125.
Seriously, I can tell everybody about the basic demographics of my class but I don't know how things have changed since then. My prep class had plenty of people with 0 college credit, most of us had at least a few credits, and one person had one year of college left until he graduated. We had a handful of Corporals, mostly Sergeants, and a good many SSgts. Most of those SSgts, though, were relatively junior, as in less than a year in grade. At least two Marines got selected for Gunny while we were at MCRD, and we had one person attrite from prep. Don't get all stressed out over that last point, he showed up running a one-seventy-something PFT and halfway through the course was only at one-eighty-something.
Again, all of this is dated, so I'd like to hear from people who went through recently what their classes looked like. Also, for your reading pleasure, enjoy this in your spare time...
https://web.mcrc.usmc.mil/G3/OfficerOR/MECEP 2006 STUDENT GUIDE.doc