Note that I think the analogue should only go so far, for a variety of reasons. Diana is not Clark.
But I think the Wonder Woman needs a fixed spot in the mundane, normal, non-superheroic world where she has friends and associates. It need not be a place where she works (because Diana is not Clark/Superman), but it should be a place where she can feel at home and have a social life. In a way, it would serve as the gateway for Diana to our world, rather than as a gateway for her to the supernatural world. In some ways, the relation between Diana and Holliday college might be more like Batman's relation to the GCPD.