After studying one course, many of the members of a study circle will stay together to go on to the next course, but some may drop out until they are ready and able to pursue a subsequent course. As friends move on to higher level courses, and other friends join at various points in the sequence, the membership of a study circle can gradually change. Although members of study circles will often engage in social and service activities together, no feelings of exclusivity should be allowed to develop among them. Furthermore, the study circles should be guided by the spirit of consultation in planning recreation, teaching, and service activities.