<p>At colleges I am familiar with your would have to take 16 credits per semester (usually 4-5 classes) on average to graduate after 4 years, unless you come in with some transfer credit (e.g. APs) or take classes during the summer.</p>
<p>Some private colleges count credits differently: they give 1 credit to most courses (a few courses might be 0.5 or 1.5 or 2 credits) and you would have to take 4 credits each semester to graduate on schedule.</p>