A secondary school which had the worst GCSE results in England at the start of 2005 now has the most improved figures in Kent.
Montgomery School has the most improved GCSE results in Kent
The Montgomery School, in Canterbury, has seen the proportion of pupils gaining five or more GCSE passes at grade C or above rise from 4% to 27%.
Head teacher Kerry Harding said a lot of hard work had turned things around.
However, the school was also named the fifth worst in England and Wales for truancy levels.
Kent County Council identified the Montgomery School as being in need of help before the government figures in January 2005 put it bottom in the GCSE pass rates table.
Now the school is about making pupils feel successful every day, Ms Harding said.
"I think we all looked at ourselves and reflected on our practices, and looked at ways of making school more interesting for the pupils.
"Everybody has come on board - the pupils, parents and staff, and the local education authority.
"If you all pull together, you can turn a school around fairly quickly."
Ms Harding said the truancy figures were being tackled, but it was an uphill struggle which would take time to overcome.