This community is designed for existing secondary subject leaders, and is led by a Secondary Assistant Maths Hub Lead together with a local leader of maths education whose expertise will support participating subject leads professional development alongside deepening their understanding of the current local and national maths educational landscape. A key aim of the NCETM and Maths Hubs is to develop successful secondary maths departments that are well led, and that provide ongoing subject professional development through collaborative working both within and between departments. To achieve this, it is vital that the department as a whole has systems, policies and ways of working which support ongoing sustainable improvements in teaching and learning, including the collaborative professional development structures which are needed in order to develop and embed these approaches.