<p>...if they didnt fulfill the pre-req class?</p>
<p>In some cases yes, in some cases no. As it happens, a roommate of mine got kicked out of an upper division philosophy class that he tried to take as a freshman, because he was deemed “not ready” when he probably was, to be honest. I think it might have been to make room for older students.</p>
<p>However, on the flip side there are many cases where they don’t care if you fulfilled prerequisites. Check with the professor. Shoot him/her an email.</p>