As professional adults, we need to do our very best to eliminate
potential hazards in the artroom. In fact, any hazardous, toxic material
is not to be found in the classroom. Have you ever looked at the MDS
(material data sheets) that are to be kept on file? As a teacher and
consumer of such materials, you are responsible for reading, knowing, and
acting upon that information.
Another thing not mentioned is the potential for suing.