Judah Leblang served as the primary evaluator for the Center of Excellence for Learning in Education, Science and Technology (CELEST) from July 2009 to June 2010. Until PERG took over the evaluation, CELEST had no logic model or rigorous evaluation plan. His evaluation work was focused on assessing the "centerness" or value of CELEST as a center, and in collecting and analyzing data for the project during Year 6, as well as reviewing key trends during Years 1-5. Leblang, in conjunction with PERG staff, worked with the CELEST PI, co-PIs and advisory board in order to prepare for the project's critical site review, which occurred in March 2010. CELEST had undergone a major reorganization shortly before PERG became the evaluators, and much of the evaluation focused on the organizational changes made by CELEST's leadership team, and how those changes impacted key stakeholders, including researchers, graduate students, and the participating institutions. #2011Conference #Research,Technology,andDevelopmentEval #EvaluationUse #QualitativeMethods #OrganizationalLearningandEvalCapacityBuilding