When deciding whether or not to take classes at CC, your best bet is to call the school. Don't know which school to call? Run down the list of schools and call their admissions. I did this, and the consensus is that CC is perfectly acceptable. While they're not going to straight up tell me that the Adcoms look down on CC, it should quell some of your fears. For reference, I called to ask whether I can retake courses at the local CC (they said yes, even though I'm still hesitant and just visited another 4-year to inquire about a post-bacc).