The school Pierre-François Guillon founded and directed The Professional School of Stereotomy Applied to Construction from 1871 to 1923. Each year, twenty or so students came to learn carpentry in general, staircases in particular, stonecutting and joinery. The School recruited students from 15 to 25 years old. The courses were offered over three years, and the students lived at the school. Their training started with the basic study of elementary assemblies. They then learned how to draw diagrams, then to execute models which were entered in a competition organized each year. The best models remained at the School and were exhibited in its museum. more : Policies of the School