Is evaluation used in the public sector? Realization of vision-and-values-driven social innovation (Patton, 2010) typifies the ideal of the public sector - the democratic governments of today. Public sector work in the 21st Century means adaptation and innovation as the norm in providing services to the changing realities of our complex ecology. Evaluators involved in public sector evaluations will share experiences and insights about how governments value, use, do and manage evaluation - including infusing evaluative thinking to facilitate evaluation use through evaluation capacity building of both individuals and the system by engaging stakeholders. We focus on the example of Ontario's education sector where Developmental Evaluation is positioned as an executive leadership responsibility focused on decision-oriented use (Patton 2012) fundamental to professional capacity building. Leaders' valuing of evaluation and modelling evaluative thinking is essential to building the sector's capacity in using evidence to inform decisions and implementation for student achievement and engagement. #developmentalevaluation #EvaluationManagersandSupervisors #Usinglogicmodelingasatool #ResearchonEvaluation #Collaborative,ParticipatoryandEmpowermentEval #HowTo #ProgramTheoryandTheoryDrivenEvaluation #OrganizationalLearningandEvalCapacityBuilding #2013Conference #SystemsinEvaluation #InternalEvaluation #Prek-12EducationalEvaluation #GovernmentEvaluation #InternationalandCross-CulturalEval #EvaluationPolicy #education #EvaluationUse #QualitativeMethods #EvaluativeThinking