The goal of the Leuven Systematic Case Study Research Protocol project is to stimulate practice-oriented research in order to bridge the gap between research and practice. In this article we give a progress report of the project, in which a set of Dutch-language research instruments was created and tested with postgraduate trainees in person-centered/experiential therapy at the University Leuven (Belgium). We begin by presenting the general framework for the protocol, including the three major domains of therapy process, therapy outcome, and client/therapist characteristics. Then we give an overview of the quantitative and qualitative instruments used. We explain how the project has been implemented in the postgraduate program. To evaluate the success of the project, we analyzed the answers of our trainees on a questionnaire. We give an overview of the clinical cases involved and the variety of research questions that have been formulated in the individual case studies. Finally we discuss the value of this pilot project.