In 2012, the Rural Libraries and Literacy Leadership Institute (L3), funded by the Otto Bremer Trust, was launched in Minnesota with 12 rural libraries and literacy programs, followed by a second year in Wisconsin with 13 participating organizations, and a third year in North Dakota with a total of10 organizations. Based on successes of these three years, a fourth year of the L3 Institute was conducted in the Southeast region of Minnesota in 2016-17. The overall goal of the program throughout all years was to build the strength and integrity of libraries and literacy programs within rural communities through a year-long training and mentoring process. In particular, the program sought to enhance individual leadership skills among participants, build organizational capacity, and strengthen the connection to and positive impact of libraries and literacy programs within their communities. Rainbow Research worked in collaboration with Library Strategies staff to conduct the evaluation of the L3 Institute in Southeast Minnesota, guided both by the previous evaluation of the L3 project and existing literature on the evaluation of training and professional development programs.