Abed says that he finally got into the Media Analysis class he was on the wait list for a year and a half. That would mean since first semester, but early on it is revealed that his father would only pay for classes that will help him run the family's falafel business. Therefore, there's no reason Abed would have put himself onto the wait list for such a class. At least, not until after he and his father reconcile and his father agreed to pay for media and film classes.