However, most of the new intake were twelve years old. Mr. Hardy the first headmaster recorded in the school log that:
"The Pupil Teacher and Preparatory pupils attending the Tanfield Lea P.T. Centre (53 in number) and their teachers Mr. Stringer, Mr. Crabb, Miss Clough came to the school and 174 pupils were admitted by examination from 329 candidates."
The object of the school as stated in the 1912 prospectus was to:
"Provide education, between the ages of 12 and 15 years, for children who, having previously attended an ordinary public elementary school, give sufficient promise of being able to take up an extended curriculum of such a character as is here provided, and whose parents intend them to remain until they are at least 15 years of age. The previous education of the pupils will be continued and widened and a practical training in special subjects added. The education given is indeed intended to afford, in an essentially practical manner, an intelligent preparation for the duties which will be undertaken when school days are over."
In 1919, the school was re-christened "Alderman Wood School" and took on grammar school status. In the mid 1940's its name was changed to Stanley Grammar School. In 1977, Tanfield Comprehensive was formed by the amalgamation of the existing school with Shield Row Secondary School. The school then had about 1,300 pupils and 76 teachers, significantly larger than the numbers some 65 years before. 1986 saw another change with the phasing out of the 6th form and the opening of the Tertiary College at Consett. In 1992 the sign outside read "Tanfield School".