The deputy general secretary of the NAHT school leaders’ union, Nick Brook, is to leave his post next year.
Mr Brook, who has served at NAHT for more than six years, will stand down in March and join youth social mobility charity Speakers for Schools as its chief executive.
A former teacher and senior civil servant, Mr Brook was appointed as independent chair of the Department for Education’s Strategic Tutoring Advisory Group earlier this year, providing advice to ministers on actions to improve the impact of tutoring, and will continue in that the role.
Tes understands that decisions around the senior structures at NAHT will be taken in the new year.
Mr Brook described his appointment as a “huge privilege”, and described the mission of Speakers for Schools - to help “level the playing field for young people of all backgrounds” - as something he “deeply” cared about.
He said: “Throughout my career, I have worked to ensure that the least advantaged young people have a better chance to succeed in life, so I am delighted to be joining such a fantastic organisation, which is driven by this very aim.
“Over the past 10 years, the charity’s work has inspired and supported a generation of young people to pursue their interests and passions, broadening access to the world of work.
“I am looking forward to working closely with colleagues across the organisation to continue its fantastic growth trajectory, positively impacting the lives of thousands more young people.”
During his time as deputy general secretary Mr Brook led the NAHT’s Accountability Commission, which proposed a series of major reforms of the system, including a different role for Ofsted to provide more diagnostic support to schools found to be struggling.
Speakers for Schools was set up in 2010 by TV journalist Robert Peston.