First, the instructor must establish some baseline rules for the classroom to keep it safe and free from hazards. This includes:
1) no eating, drinking, or chewing gum in the classroom.
2) always wash your hands after working.
3) wipe up all spills immediately.
4) use all equipment and supplies carefully and responsibly.
The instructor should also make sure there is adequate ventilation, whether it be in the form of a building ventilation system or windows that can be opened (preferably both), and adequate lighting, either artificial or natural (again, preferably both). Signs should be posted around the classroom reinforcing safety rules. Finally, the art instructor must check to see if all materials and supplies are securely placed on the shelves and are not in danger of falling off, and that all supply cabinets, containers, drawers, and the like are labeled clearly.