My developing skill in pottery has inspired a friend to take a class with me at the local pottery studio. My past instructor left the studio so we took a class with an older woman who is said to have great skill and knowledge. The woman is unstable, weird, and sometimes out right mean. I feel very badly for my friend who spent near $400 for the class and supplies. I will give the instructor credit for being very knowledgable but she is unpleasant and my friend is not getting what she paid for. I want to speak to the stafff running the organization about this issue. (nonprofit) I'm just not sure what to say. Many in the class feel the same way but do not want to speak out. I feel being a lone voice on the issue will look as if I'm just whinning. We don't plan to take another class with this woman but I hate to see others waste their money. Advice would be greatly appreciated.