After you get the OK from Duke, you have to apply to whatever school or schools that you might want to attend. After I was accepted last spring, I chose my classes and had them approved by Associate Dean Susan Sockwell. So I signed up. Because Stetson is pretty small, I didn't have any trouble getting the classes I wanted. I have heard, though, that it can be tough at larger schools because many won't register their visiting students until all regular students have selected their classes.
People always wonder about tuition.
The deal is that you pay your school its tuition, and then Duke gets the difference between that and Duke tuition. Gradewise, this year has been very low key. While my grades are reported to Duke, only the credit actually transfers. For me, it wasn't a problem. I didn't need to worry about not having Duke Career Services to rely on because I already had accepted my job.