Welcome to cornerstone Co-op. Cornerstone looks very nice but don't get fooled it is not what you think it is. Cornerstone has a varity of classes. Cornerstone co-op is hosted by Mrs. Fifi Yoder. This website is to show you what you are actuly signing up. A lot of weird people go to cornerstone co-op. The classes are very nice but rethink the people. At the top of this page there are links to all the rooms at what happens in the rooms.