Entry under History in Wikipedia states :- 'It was founded in 1926 as Bedlington Secondary School for the areas of Bedlingtonshire, Ashington and Newbiggin, being built next to Bedlington railway station. Subsequently it became Bedlington Grammar School, before turning comprehensive in 1974. It gained Maths and Computing College status in 2009.
I would add - the Secondary Modern School merged with the Grammar School to create the High School. The new build + the old grammar school remained until a new High School was built, on the existing grounds, and opened in 2016.