I graduated from undergrad in 2000, so all my prereqs were taken between 7-9 years ago. However...I completed a master's in bio in 2004 and I currently TEACH all of the bio pre-reqs. I have heard rumors about schools not accepting pre-reqs past a certain age, but I haven't seen that on ANY school website and it is not in the msar. They all give the oldest MCAT you can submit, but nothing about the age of the pre-reqs. Anyone have any insight on this??? Should I be worried?