Ofsted has apologised to a school that was incorrectly branded "inadequate" and told it must improve by inspectors.
Raincliffe School in Scarborough appealed against the original report by the education watchdog, which criticised the quality of teaching.
A second report has now been published, classing the school "satisfactory".
Staff said the original grading placed "considerable pressure" on the school and was due to "flawed processes" by inspectors.
In a letter to parents, headteacher Mick Jolly and executive headteacher Garry Hancock said: "The unfair publicity created by the Ofsted policy of publishing reports prior to judging complaints has added to the pressure.
Rating 'caused stress'
"I hope that the changed report and Ofsted's admission of their flawed process will restore the broader community's confidence in the school."
The school formed a federation with Graham School in 2009 and says results have been steadily improving.
A spokesman for North Yorkshire County Council said: "We felt that the judgement that the school required a Notice to Improve was made without secure inspection evidence.
"Ofsted has upheld this view and apologised for the errors which were made and any stress that may have been caused."
An Ofsted spokesperson said the school's overall judgement was changed to satisfactory "after detailed consideration of the evidence".