The piloting of the EURECA course took place in thirty face-to-face sessions in the five partner countries, bringing together 393 people and totalling 872.5 hours of experimentation.
The aim of these presentation sessions and practical access to the e-learning course was to gather critical opinions from a wide range of adults to make improvements to the course's modules and learning materials.
The thirty piloting sessions also contributed to increasing participants' awareness and knowledge of urban ecology and environmental problems in general, and of the implementation of the United Nations Sustainable Development Goals. Some also had a multiplier training action, such as in Poland, where the coordinating partner SocLab trained people who subsequently conducted training sessions in various locations and contexts. 
The critical appraisal asked of the participants focused on eight aspects: 
•    Clarity and understanding of the content
•    Learning and novelty 
•    Difficulties in understanding 
•    Relevance of the content 
•    Practical application of knowledge 
•    Motivation to continue the course  
•    Attention and involvement 
•    Suggestions for improvement 
•    Promotion and involvement of other participants
The results were the subject of reports by the partners, from whose summaries they made improvements to the five modules and the learning materials of the course to arrive at its final version, available in free access.