The University of Wisconsin at Madison’s Center for the Integration of Research, Teaching, and Learning (CIRTL) is a multi-institutional center dedicated to training graduate students how to teach more effectively. Launched in 2003 as a collaborative effort between four universities, CIRTL has grown rapidly, now including 22 universities that will collectively graduate some 2,200 future faculty that will have participated in at least one CIRTL offering or training session. Funds from this grant support the construction of a new IT communications infrastructure, the CIRTL Network Commons (CNC), to replace the one that was developed when CIRLT membership was small and when capabilities for online information exchange and collaboration were much less well developed. Products to be supported by the CNC include university dashboards for access to information and tools, social tools to promote community among participants at the member 22 institutions, online community forums and learning community spaces, resource sharing tools, course management tools, cognitive tutors to help students learn complex thinking and problem solving skills, and CIRTL event management and registration tools. The CNC will also enable the collection and analysis of usage data to facilitate informed assessment of the impact and effectiveness of CIRTL’s programs.