The evidence about curriculum development, CPDL and the leadership of both suggests that there is no systematic research reviews re: curriculum development with evidence re: pupil impacts – and too few studies with that to support them. But there are systematic reviews with pupil impact data re CPDL and its leadership that: – do explore curriculum development in depth. – highlight the contribution leaders can make to both and the virtuous circle that leaders can make between them. The session will explore these findings and draw conclusions about developing great leadership of CPDL and curriculum development.