Since 1 June 2011, the school has had academy status, and its name formally changed from Sutton Grammar School for Boys to Sutton Grammar School, although it remains a selective grammar school for boys. From September 2017, however, it began accepting applications from girls to join the sixth form.
The current headmaster is B Cloves, who joined in 2019. His predecessor, G D Ironside, was headmaster of the school for 29 years. The deputy headmistress is a Mrs Ross who joined in 2018.
The current Senior Leadership Team includes: Mr B Cloves (Headmaster), Mrs K Ross(Snr Dpt Head, Dsg Safeguarding Lead, Pastoral Lead), Mr J Costello (Dpt Head), Mr S Brook (Asst Head), Mr C Robson (Asst Head, Head of Sixth Form, DDSL), Mrs N Bennett (Director of Finance & Operations) and Mr R Murrill (Chair of the Governing Body).
Other leadership posts are held by: Mr A Marsh (Head of Upper School, DDSL), Mrs L McDonald (HY13), Mr O Green (HY12), Mr A Heasman (HY9), Mr J Bird (HY8), Mr C Roy (HY7), Ms M Mahmoud (SENDCO), Mr J Tuck (Asst SENDCO) and Mr A Blunt (Head of PE & Games, DDSL).