When the term "school" is employed to-day, it is usually taken to mean the "school-house," _i.e._ the building in which the work of the school is carried on. It must, however, be emphasised that in medieval times a school-house was an "accident." Specific buildings for teaching purposes were a comparatively late development in the history of schools. The term "school" considered etymologically means "leisure," and probably the modern idea of school developed from the fact that the leisure time to which [Greek: schole] specially related was that which was given up to discussion. A second stage of development is reached when the term is restricted to organised school. The essential idea of a school at this stage is that of a master and his scholars. The master might be a man of over seventy years of age and his pupils men of middle age (as was probably the case in the school conducted by Archbishop Theodore), or the master might simply be a youth, and his pupils a few village children learning their letters, as would be the case in the schools taught by the youths preparing for the priesthood in the house of the parish priest; in each case the term "school" was equally applied and considered equally appropriate. The place where the school was held was a matter of indifference. It might be held in the open air, in the cloisters of a monastery, in some part of a collegiate church, or possibly in some more suitable place. Then, too, the school might be held at regular intervals or it might simply meet occasionally. Briefly we may say that the conception of "school" was in a state of flux, and merely implied that a master and pupils met together for purposes of instruction.