The CT State Department of Education (CSDE), through the State Education Resource Center (SERC), has been providing training, technical assistance, coaching, and evaluation to CT school districts since 2000. At that time, SERC provided professional development, on-site technical support and coaching, and networking sessions to five schools in four districts interested in initiation and implementation of PBIS. Since 2005-2006, SERC has trained CT districts and schools in collaboration with the University of Connecticut and the National Technical Assistance Center on Positive Behavioral Interventions & Supports funded by the Office of Special Education Programs (OSEP). From 2007 to 2011, SERC has trained 103 schools representing 23 districts in Year One Positive Behavioral Interventions and Supports through the SERC/UCONN collaboration. As of the 2007-2008 school year, all schools beginning PBIS training have come from districts that have committed to full-district roll-out of PBIS. Several of the schools involved in the 2007-2008 training cadre are participating in the training as part of their district improvement plan in response to CSDE’s targeted effort to monitor and address disproportionality in the rates of suspension and expulsion for students with disabilities.