I agree with the other suggestions.........make it clear what basic knowledge of sewing is..........sewing/quilting is not machine maintance (winding bobbin or threading) that is another chapter.....in addition, I would put the 1/4's in brown lunch bags ..........stating you get what you get. It is amazing how some Adults bicker over something free. How many students are you going to have? That too is a consideration, remembering you will probably have various levels of skill. When I was teaching it was fun and rewarding for me just to have someone walk away with a smile and saying "I learned something". And remember for you to have fun........maybe a preclass would be beneficial, tools, fabrics, one way prints etc..........calla