The results are an increase of 28% on 2008
A high school in Stoke-on-Trent earmarked for closure has been named as one of the most improved in England in new GCSE league tables.
A total of 44% of pupils at Mitchell High School, in Longton, achieved five or more A* to C grades in GCSEs, including English and Maths, in 2009.
The results are an increase of 28% on 2008.
The city council wants to merge the school with two others to create a new academy in Adderley Green.
Under the plans, which form part of the Building Schools for the Future programme in the city, Mitchell High, Berry Hill High and Edensor Technology College would have closed and pupils transferred to the new academy.
However, last month planning permission was rejected for the new academy.
Council officials said they would be submitting a new application later this year.
The new league tables show that Mitchell High is now the second best-performing non-faith school in Stoke-on-Trent.
The council said the school's results were a "great achievement".
Head teacher Paul Liddle said he hoped the city council would pay attention to the school's achievement.
He said: "We've got a fantastic team here and the council needs to be aware of that, and I think it is.
"Decisions have to be taken for the future but they have to be for the right reasons."