I took all of my pre-reqs at a Junior College, then when I transfered to a University I took a bunch of upper division chem classes. Too tell you the truth the classes at my Junior College were a lot harder than the ones at my University, everyone I went to the JC with that transfered said the same thing, and they all transfered to different universities (Davis, Berkeley, San Diego, Cal Poly), so I think some community colleges are great and others are well not up to par, so most dental/med schools perfer to not accept classes from them. But who knows I'll find out soon enough if they like what they see.