From a personal perspective, I didn't find Fundamentals at GPC to be a huge challenge. It tooks some juggling at first to get organized, but it was manageable.
Med./Surg. was more interesting, and a little harder than Fundamentals obviously, but my issue was compounded with some extremely stressful personal matters that made it almost impossible to give it 100%. I found that folks who were already PCT's or involved in the healthcare field in some way, (relatives who are RN's, close friends who can give them a head's up about what to focus on with studies, LPN's) seemed to do better for obvious reasons.
I, on the other hand, have absolutely no experience in the healthcare field.
I've always been an independent learner, so I don't, nor did I ever expect, faculty to hold my hand through the process, but when you have a couple hundred pages to read for an exam, on top of everything else going on, it helps to have someone give you a 'head's up' as to what to focus on. In my mind, that is what lectures are for. But I didn't find this to be the case while I was there.
I am still welcome back at GPC, but my personal experience was so negative, I doubt that I will.
But to all the students who manage to breeze through the program with no problem, I'm in total awe and amazement of you!