hehe... I don't think your GPA levels off as classes get harder. College classes are all challenging on different levels in my opinion. My freshman classes were a pain because of how unfocused and survey-oriented they were. My upper level courses were challenging in that they were more intense, but focused on more well-defined topics. Honestly I don't think college got any more difficult after freshman year, it was just challenging in different ways. But a good GPA, combined with a good MCAT, will only get you an interview (most of the time). After that it's ALL subjective. I wrapped up my undergraduate career with a 3.78 in science and mathematics and a 3.89 overall. My MCATs aren't stellar but not weak either. Out of six schools for which I completed secondary applications I interviewed at five. I am on the alternate list at four (Finch/CMS doesn't have an actual wait-list, you just wait and wait until they accept you... if you don't hear anything by August you know you weren't accepted -- kind of stupid). So, work hard, do well, but don't bank on a good GPA.