This chapter focuses on the evidence base which is collected in the name of student voice (often referenced in the singular rather than the plural), with the intention of supporting the transformation of the student learning experience. This exploration looks at how student voices are heard (or not heard) within institutions focusing on the methodologies adopted for research and evaluation with, for, or about students in higher education. This chapter presents a Typology of Institutional Research and Evaluation which claim to amplify student voices, outlining a conceptual overview of practices within the UK sector. This synopsis of seven categories provides a tool for academic leaders and educational developers to map and interrogate the scope of this activity within their own institutions to ensure that activity is designed and implemented from a critical standpoint. This includes methodological and ethical discussions of a variety of institutional research and evaluation approaches and the data hierarchy in which they sit.