This article describes a 4-year study which identifies the differences between a coteaching and a non-coteaching model of student teaching. The study of academic impact took place in the St. Cloud Area School District over 4 years. The participants were teacher candidates placed with cooperating teachers in which both members had participated in the two coteaching workshops. This study clearly establishes the positive impact of the coteaching model of student teaching. Teacher candidates, when paired with cooperating teachers and trained in coteaching, increase the academic achievement of students in the classroom.