I took organic at a community college, and it was no problem at any of the schools i applied to and i got a few acceptances. i had already graduated, though, and was working full time, so it was pretty much my only option to take night classes. if you're currently enrolled in a university, and you take a core science at a community college, it might look like you're ducking it at your university, and they might frown upon it. i'd be safe and just take it at your school