To ensure that all evaluations are carried out to the same standard using the same scoring, it is necessary to compare how each evaluator scores agents. The best way to do this is get all of the evaluators to score the same agent, call or media, and questionnaire to compare the scores for each section. When the evaluations have been carried out and compared, the group of evaluators should discuss the different evaluations and agree on a standard set of criteria that they can all use.