In this article we propose a framework for reporting mathematics results from national assessment surveys (NAS) such that effective use of the resulting reports can enhance teaching and learning. We explored literature on factors that may contribute to non-utilisation of assessment data as a basis for decision-making. In the context of South Africa, we identified the form and formats in which results of NAS are reported as a possible limiting factor to the effective use of summative assessment results for formative purposes. As an alternative, we propose a standards-based reporting framework that will ensure accurate measurement of, and meaningful feedback on, what learners know and can do. We illustrate how, within a properly designed reporting framework, the results of a NAS in mathematics can be used for formative purposes to enhance teaching and learning and, possibly, improve learner performance.