Four secondary schools from the region are among the bottom 10 in the measure which aims to show what impact a school has had on a pupil's education from their key stage two tests sat at 11 years old to the point where they sit their GCSEs.

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Critics of league tables say measuring schools by results alone does not show the progress schools make with each pupil. The value added tables were introduced to address this.

Today's tables show that almost one in five of the schools ranked as the worst 100 in the country for improving their pupil's performance are from Yorkshire.

The Ridings School in Halifax is the region's worst and the third-worst in the country.

Endeavour High School in Hull is the country's fifth-worst, followed by Wyke Manor in Bradford, which is sixth from bottom, and the City of Leeds School which is ninth.

There are 17 secondary schools from Yorkshire among the worst 100 in the country.

Many of the schools on the list have faced disruption after being identified as potential academy projects – such as Wyke Manor and Rhodesway School in Bradford – while Calderdale Council has approved plans to close the Ridings in Halifax by 2009 after the school was condemned as failing by Government inspectors for the second time in just over a decade.

Rhodesway School has been faced with uncertainty after potential city academy backer, the Edutrust, withdrew from a project to sponsor a new school to replace it while Wyke Manor's future was cast in doubt after the Government announced last year that it would not approve any building projects on the site because of its proximity to a chemical plant.

A leading teaching union figure said the value added table did not show if schools were making improvements year-on-year.

Stuart Herdson, immediate past president of the Association of Teachers and Lecturers union added: "All league tables do is show the socio-economic background of the pupils."