There are many definitions of the term evaluation. One of the shortest attempts to define evaluation is phrasing it as combination of evidence and judgment. The term evaluation includes also different notions of “valuing,” including the provision of orientation or to attach a specific value to something. Wiliam M. K. Trochim (2006) defined evaluation as “the systematic acquisition and assessment of information to provide useful feedback about some object.” Although the object of evaluation can be whatsoever, evaluation as a systematic exercise became more and more associated to the field of policy making and public service delivery (Rossi et al. 1999). The OECD (2002) pays attention to the different scopes of objects and the intervention logic and accountability of policy-making by defining evaluation as “the systematic and objective assessment of an on-going or completed project, programme or policy, its design.
