This territorial structure can easily be justified by an analysis of the historical development of current assets (Fig. 3). In fact, located in the central districts are the first communal public schools established in existing historic buildings, characterized by large volumes and high ceilings. Located in semi-central districts II, III, VI, IX, XIII and XVII are the first structures built specifically as schools in the period between the unification of Italy and World War II. School buildings constructed during these years all have some common characteristics: large volumes (often greater than those of the his- toric buildings), compact forms, load-bearing wall structures with floors in brick and concrete, flat roofs and large window areas