The goal of this project is to reform teacher preparation through the implementation of a research-based model of co-teaching in student teaching at teacher preparation institutions across the country. Four years of research conducted on a co-teaching model of student teaching has demonstrated a statistically significant increase in academic performance for elementary learners in co-taught classrooms. Co-teaching is designed to assist both the cooperating teacher and teacher candidate in collaboratively planning, organizing, delivering, assessing, and sharing the physical space of the classroom, allowing the classroom teacher to partner with the teacher candidate rather than give away responsibility. The Renaissance Group (TRG), a national consortium of teacher preparation institutions, proposed to take the co-teaching model initially developed at Saint Cloud State University and provide the training and support necessary for teacher preparation institutions across the nation to successfully expand it. The 14 institutions involved in this proposal collectively produce over 2,500 teachers each year and work with over 600 school partners. One hundred percent of these institutions work with high needs schools and all of them place students in classrooms where Adequate Yearly Practice (AYP) has not been met. During the 2011-12 academic year, TRG applied to the US Department of Education for a thirteen plus million dollar grant on behalf of its member universities to expand the co-teaching model. Although the proposal was not funded, the co-teaching model has become a high priority and practice in educator preparation institutions across the country.