The Lucent Peer Collaboration Initiative Project, funded by Lucent Technologies Foundation, was a three year project located in four school districts: Albuquerque, New Mexico, Broward County, Florida, Lancaster, Pennsylvania, and Seattle, Washington. As part of the project, NCREST documented the development and functioning of peer collaboration groups--called Lucent Learning Communities--in the four districts. The project was designed to support teachers and school and district administrators in creating professional community structures and norms for examining and improving their practice so that student learning improves. NCREST staff coordinated the research and documentation component of the project, which aimed at informing both the project participants and the world of practice at large about the processes and outcomes of the work.