Hi Janet, I agree with you about the expansion of chemical use in classrooms and the workplace. We are seeing more incidents of students having used chemicals coming into the class and causing problems as a result of their altered behavior. We have a very clear method of dealing with these situations of which the students are informed. Our policy on this is clearly understood to the point that we have not had any situations arise for the past 18 months. For this we are thankful and feel we have a firm grasp on how to work with such situations. Gary