Classroom drama in the Irish primary school context remains a relatively new endeavour and is largely under-researched. The knowledge base for all aspects of teacher education should be informed by rigorous reflection on teachers' experiences in the classroom. This paper reports on a phenomenological study conducted with seven Irish primary school teachers which focused on their experiences of co-creating drama with their students. Co-creating drama is held in this work to be the coming together of teacher and students in a collective creative enterprise during the drama lesson. The term proposes a partnership whereby they operate as co-participants and co-artists in the drama experience. The 'creating' aspect of co-creating can be considered the artistic enterprise of making drama in a way that is new and unique to the group. In considering the teacher as a potential co-creator of drama, the paper probes the emergent and changing ontological attitudes of the participants throughout the process: the values, attitudes and perspectives that informed their teaching. The paper illuminates the phenomenon of teachers co-creating drama in all its complexity, and seeks to reflect on the meaning of this for the teachers.