This article aims to examine the field of teacher preparation in the current era of accountability and testing. The authors claim that policymakers try finding ways to improve teacher preparation, hence they use assessment tests. This article shows an evidence that teacher preparation is in the forefront in its use of outcome measures to gauge the effectiveness of its work. The authors suggest that nuanced use of these assessment measures, in ways that don’t over assume their validity, should be the approach taken as this innovation evolves.