In general, physics education research involves a broad range of research interests. These are described more fully at PER Central (http://www.compadre.org/per/) which is a site designed specifically to serve as an informational touchpoint and online community for "producers" and "consumers" of physics education research (PER).
At the University of Cincinnati, the PER group is a mutual effort between the Physics Department and the School of Education. The work of the group focuses on projects involving the implementation and evaluation of best teaching practices and curriculum in the introductory physics sequences, research on student development of scientific reasoning as well as its assessment, and pre-service and in-service teacher professional development. The group includes three primary faculty members from main campus as well as two faculty from UC's branch campuses: Krista Wood (UC Blue Ash) and Darwin Church (UC Clermont). However, due to the nature of the research conducted, a variety of faculty members from across UC, as well as collaborators at other institutions, are involved in many of the projects.
Graduate degrees in physics education research may be earned through either the Department of Physics or the School of Education. Because the programs are quite different, it is best to consult with one of the PER faculty before applying.