“My teacher looks disheveled and is slurring her words. She needs help.”
Fill out a Person of Concern form, describing your observations.
“My teacher keeps telling me that I disrupt his class, but I don’t think I do. What do I do?”
The first step would be to set up a meeting with the instructor to discuss this matter. If the matter is not resolved during this meeting, you may want to discuss this further with the chair or dean of the department, or fill out a Person of Concern form describing the situation.