A contingent approach to strategic and tactical choices in formative and summative evaluations is presented. Choices regarding evaluation phases and tactics were found to be dependent on evaluation goals (e.g., whether the evaluation has a formative or summative purpose) and contextual variables. A simulation was designed to pool the judgments of evaluators and users of evaluations to see how they felt evaluation strategy and tactics should change as the situation changes so as to increase the likelihood of evaluation success. Eight panels were constructed to examine eight different situations. The next step in this research is to determine whether following the pooled judgments does lead to greater evaluation success.