A second Bristol academy principal will leave his post at the end of the academic year.

Stephen Kings, the first leader of Merchants' Academy in Withywood, has announced his intention to retire from August 2010.

This follows the news that Ray Priest, principal of City Academy Bristol, is also planning to stand down.

Mr Kings, 57, returned to his home city to help sponsors the Society of Merchant Venturers and Bristol University launch the academy to replace Withywood Community School.

He had taught at Withywood earlier in his 34-year career and had gone on to be head of a successful grammar school in Devon.

The academy is now advertising for a replacement for next September. A six-figure salary is on offer for the successful candidate.

Mr Kings was named principal in 2007 and was heavily involved in the planning for the academy, which opened in £29 million new buildings in September 2008.

Chairman of governors Denis Burn said: "The governors and I are immensely grateful to Stephen for the three years he has given us as academy principal.

"His superb leadership skills have been key in getting this project off the ground and his understanding of how a successful school needs to operate has led the academy to make considerable achievements in its first two years, such as the introduction of the world-renowned International Baccalaureate qualification and the development of a strong vocational curriculum.

"Stephen's departure comes at a time when we are entering a new phase in the school's journey. With his help, we have laid some strong foundations and set the academy on a path of transformation, which will lead to continued improvement. We are looking forward to the future and will be looking for a replacement who shares our vision of creating a school that inspires students to aim high and achieve success."

Mr Kings said: "I have thoroughly enjoyed my three years as principal of Merchants' Academy and feel it has been a rewarding way to spend the closing years of my career. I began teaching in south Bristol over 30 years ago and it's been a privilege to help set up the academy here in Withywood, as I strongly believe that the chance for an outstanding education is no less than the local community deserves.

"The academy has excellent support in the shape of its sponsors, the Merchant Venturers and the University of Bristol, who have been working to develop good systems and structures that I am sure will lead the school to continued success.

"I am confident that the academy will continue to go from strength to strength and I will certainly be following its progress from afar."

Professor Eric Thomas, vice chancellor of Bristol University, said: "Stephen's wealth of experience, coupled with his professionalism and commitment, have enabled him to lead the academy with real distinction.

"It has been a privilege for the university, as co-sponsor of the academy, to work with him and play a part in this inspiring project."