Don't know the exact year the school was built. I would assume there would be some colliery rows built when the colliery was due to start production. The Durham Mining Museum does not have a year against when the colliery was opened but it does have 1982 as the first year coal was output. The First Edition of the OS map of the Cambois area held on the National Library of Scotland is 1859 (published 1865) and there is no colliery or houses. The Second Edition - 1896 (published 1898) shows the colliery, many pit rows and the school etc.
All initial photos and comments from HPW. (added into the Album by Eggy).
Comment from HPW - credit to Russel Hogg for enabling me to capture the Pit Surface photo's,without whom it would never have happened.