How many classes do I have to take to be a full-time graduate student? Knowledge Base Academics Graduate Academic How many classes do I have to take to be a full-time graduate student? You have to take 6 credit hours (2 classes) to be a full time student. Related Articles Where can I find the Academic Calendar? After I register, how do I save my schedule? Do I have to contact my graduate advisor for registration? Will I be able to register for graduate courses online?