The new headmaster of Aylesbury Grammar School is a former teacher from the school.
Mark Sturgeon was head of geography and head of Year 13 during his time at the school from 1998 - 2005.
He will take over from departing head Stephen Lehec in September.
Mr Sturgeon said: “The interview process was very thorough and I am absolutely thrilled and delighted to have been given this fantastic opportunity.
“My vision is for the school to be exceptional and the best it can be. It gets outstanding exam results and has excellent staff.
“I am extremely lucky to go into a school with such a fabulous platform already in place, and very honoured to be continuing the great work of Stephen Lehec.”
Jim Collins, chairman of the governors, said Mr Sturgeon emerged top of a very strong field of candidates for the role, and said: “We are sure that Mark will be an inspirational leader for everyone at the school.”
Mr Sturgeon lives in Aylesbury with his wife Angie, who is a primary school teacher, and their three young sons, Ted, Stanley and Hugo.
He was originally appointed to AGS when Ian Roe was head. He continued to work there under Steve Harvey, but had left the year before Mr Lehec joined the school.
But there will be some familiar faces amongst the 100+ members of staff.
He said: “There are a few that I know from my time at the school before. It will be nice to re-engage with them in a professional way, but also good to have fresh faces.”
Mr Sturgeon, who graduated from the University of Liverpool with a degree in geography, would like to do some teaching on his return to AGS.
He said: “I need to look at the challenges of the role first, but teaching is the best way to get to know the boys, and teaching is my passion, so I would like to do as much as possible.”
He said he is looking forward to new challenges and one will be to try and get to know all 1,300 students.
Mr Sturgeon studied for his teaching qualification with the Institute of Education at the University of London before starting his career in 1996 as a geography teacher at Burnham Upper School.
He left AGS in 2005 to become an assistant headteacher at Dr Challoner’s Grammar School in Amersham, and by the time he left he was deputy head.He is a keen rugby player and qualified football coach and also enjoys squash, golf and water skiing.
Mr Lehec is leaving to take up the post of headteacher at Kingston Grammar School.