STORAGE
Include lots of storage and drying racks. An art room is a production facility with many different groups of students using the same space. Without storage for supplies and for in-process projects, the room soon becomes clogged with individual projects and nothing more can happen. Learning is seriously curtailed when lesson plans are limited because there is no place to put he work from session to session. Include some deep and wide drawer type shelving with suspension hardware for large flat paper and display posters. Consider a few lockable spaces for "teacher only" access for materials and equipment that may be too hazardous or valuable to use without supervision or special instruction.
Perimeter cabinets are convenient, but some wall space is also needed for windows and for display. Consider shelving in an adjacent room designed as low cost warehouse quality space. Provide a glass wall and/or video cameras to make it easy for the teacher to visually supervise students while they retrieve and stash their work.