In today's world, Global Competence represents a fundamental disposition for teachers who must be able to teach effectively in classrooms with students from diverse backgrounds and manage multiple learning contexts. For these reasons, it is necessary to set up educational activities during initial teacher education programs aimed at developing and assessing preservice teachers' ability to be Global Competent. This study was aimed at designing and creating a set of rubrics that can be used by either teacher educators or preservice teachers, in this case, as a self-assessment instrument. The research design was based on a modified Delphi method composed of five rounds to collect both qualitative and quantitative data. A panel of 31 experts was involved in an iterative process until a consensus among the experts was reached. The rubrics can be employed in several contexts and situations such as: before and after an international experience, during or after a simulation or a workshop based on intercultural and real-world situations.