The head of a troubled "super school" has quit after less than a year in the job.
Shelagh Potter has stood down as head teacher of Jarrow School in South Tyneside.
Ms Potter's departure follows what education bosses admit has been a "difficult time" for the new school, which only opened at the start of 2003.
Governors at the school have asked Dr Diana Kinnaird, currently director of South Tyneside Action Zone, to take over until a permanent appointment is made.
The news comes after a turbulent 2003 at Jarrow School, which was created from the merger of the former Springfield and Hedworthfield comprehensives.
The situation culminated in a near riot at the school in the summer involving more than 100 pupils. Police made three arrests.
Fellow students at the former Hedworthfield Comprehensive site also staged an angry protest about the merger.
A spokesman for South Tyneside Borough Council said: "Shelagh Potter, head teacher of Jarrow School, will not be returning to the school in the new term."
In a letter to parents and staff, Barbara Hughes, the authority's executive director of lifelong learning and leisure, said: "The interim appointment will be fully supported by the governing body, the school's existing leadership team and the staff as a whole.
"The local education authority is committed to providing full support to the school at this difficult time."