The purpose of this evaluation was to first determine the extent to which Corporation grantees and sub-grantees are collaborating across the three CNCS streams of service (AmeriCorps, Senior Corps, and Learn and Serve America) at the programmatic level. The identified programs were then examined to determine what their collaborations look like, why they chose to engage in collaborative efforts, and whether or not there are measurable impacts made by such collaborations. (Author)