This report describes the Body of Evidence approach taken in Wyoming to implement standards-based graduation. The Body of Evidence plan calls for more than a single test to justify issuing a high school diploma. Graduation requirement rules, known as Chapter 31 rules, establish the requirements for a diploma. The body of evidence is to be designated at the local level. It should answer two questions: (1) whether the student knows enough to graduate; and (2) whether the evidence can support the answer to the first question. The Wyoming State Department of Education has listed four possible approaches to designing a body of evidence system: (1) course-based; (2) course-based and common assessment; (3) district-based; and (4) multi-district approaches. Assessments used may be conjunctive (scores on all measures above the criterion point, compensatory (scores on some measures offset lower scores on others), disjunctive (proficiency on only one measure required), and mixed-model. School districts must develop an evaluation system that meets criteria of alignment, consistency, fairness, standard setting, and comparability. The body of evidence plan should create opportunities for students to demonstrate competence in ways congruent with individual learning styles. The greatest impact from the new plan may be on teachers, who will not necessarily have the time to develop meaningful and multiple assessments. (SLD)