As states move to teacher evaluation that is intended to capture teacher contributions to students' learning outcomes, some states have adopted "value-added measures" to examine teachers' and teacher preparation programs' effectiveness. In Louisiana, the value-added assessment of teacher preparation programs includes students with disabilities and has provided part of the impetus for the increasing national interest in assessing teacher preparation through value-added indicators and developing action plans in response to value-added results. These results can signal concerns across content areas, program delivery, and student characteristics, but are not prescriptive regarding follow-up actions. This article provides (a) an introduction to value-added assessment, (b) how Louisiana has used value-added metrics for the assessment of teacher preparation programs, (c) the use of special education status within the models, and (d) limitations and benefits of value-added assessment results for evaluating teacher preparation programs. Finally, the particular challenges associated with value-added assessment of special educator preparation are discussed.