The article aims to be a methodological contribution to promote the debate on the ex-post evaluation in the field of development cooperation. The authors present the case study of ex-post evaluation of the project "Macedonia, Cities of Stip and Prilep: Improving the quality of life of Roma and promoting integration", financed by the Italian Cooperation and implemented by a non-governmental organization (NGO). The project was carried out from 2004 to 2007. The evaluation, realised in 2013 by the authors of this article, has used the instrument of the Theory of Change, which is currently not so widespread in Italy. The methodology has allowed to formulate a comprehensive assessment of the project despite there were some significant limits: i) the intervention did not have a specific plan of ex-post evaluation; ii) the project had ended seven years before the assessment with a consequent loss of historical memory concerning the original design and its implementation, as well as the presence of other factors that have influenced the impact of the initiative itself.
Keywords: Development Cooperation, Theory of Change, Ex Post Evaluation, Cause-Effect, Effectiveness, Impact