Evaluation
nDecide on what you want to measure
nIf you want to use the most stringent of research approaches, you will use pre/post measurement.  You may choose a standardized instrument for this purpose or develop your own measure.
nIf you are interested in a more subjective approach, you can have the members rate their success in obtaining the goals of the group.
nYou can also have members set their own goals in the first session and then have them rate their success in obtaining their goals.
nIf you want to know what knowledge was gained in the group, you can develop a list of questions related to the information taught in the group.  These questions can be asked prior to participation in the group and again upon completing the group.
nMember satisfaction can be measured by asking members to rate their perceptions on the effectiveness of the group leaders, activities, and information.