Complementarily to monitoring, the evaluation function seeks a clear understanding of the changes induced by the intervention and aims to form judgements on the intervention’s performance. Evaluation evidence can: i) support decision making on competing alternatives, offering insights into which types of interventions prove more successful in attaining desired outcomes; ii) improve decisions on resource allocation by identifying the most effective and efficient types of intervention; iii) foster agreement on the causes of and solutions to a problem by illustrating causality; iv) detect emerging problems, including issues that may have not been covered in the intervention design and may require attention of policy makers; and v) support public sector reform, informing citizens on the effectiveness of reform efforts (Kusek and Rist, 2004[24]).
In the case of the UCS, the evaluation function will be crucial to complement the monitoring efforts on UCS outcomes and impacts. Evaluation could also be useful to understand if the processes and mechanisms of the UCS are functioning as expected. Depending on their information needs, UCS authorities would need to define evaluation questions, to be answered through appropriate evaluation methods and designs. Evaluations should be proportionate and appropriate for their expected use, and the aim, scope and analysis of the evaluation, as well as its format and resources, should be adapted to the needs of its intended uses (OECD, 2022[3]). Examples of evaluation questions for the UCS could encompass:
What is the impact of the intervention on UCS volunteers and the territories?
Does the intervention reach and affect different people in different ways? How effective is it for specific groups of young people?
How are UCS initiatives contributing to specific transversal issues (e.g. gender equality)?
Are there any unexpected effects generated by the intervention?
What types of interventions are best contributing to the desired change? Could the outcomes be achieved through different approaches?
How effective are the training modules?
What are the key regulatory barriers to UCS implementation?
Evaluation efforts need to be planned early (to ensure that evaluation results are robust and available in a timely fashion) and strategically (to meet multiple evaluation needs) (OECD, 2022[3]). An evaluation plan is the strategic and management document used to summarise the approach to evaluation and to guide the evaluation efforts along the cycle of an intervention, taking into account the purpose, evaluation questions, evaluation type and timeline (for more information on evaluation types and timelines (see for instance UNDP (2009[40])). The plan can be updated by authorities as new evaluation needs emerge.
Evaluations can be designed and conducted internally or externally, but externally commissioned evaluations can ensure higher objectivity and independence. Various evaluation types suit different questions and purposes; ensuring clarity when commissioning such exercises to external evaluators will be a prerequisite for the usefulness and relevance of evaluation exercises.