The Freinet classification ("To organise everything") is used in the libraries of some elementary schools, and was invented by Célestin Freinet to facilitate the easy finding of documents, and the use of the "Bibliothèque de Travail".
The principles are simple: Everything is split into 12 major divisions. 12 subdivisions along the principles of the Dewey decimal system are then divided into 10, and then 10 again.
Because of its logical classifications based on school work, this classification is seen by some educators to be more natural and more logical to students than official classifications based on organizational criteria. The last revision took place in 1984. It is still used, in addition to keywords, in IT and some data information organization systems.