The article is a study based on the implementation of the innovative method and open education resource (OER) tool promoted by the NON-FOR-LESL project. The NON-FOR-LESL European project aims at preventing early school leaving through the recognition of non-formal learning and the production of a tool for the validation of the skills acquired through non-formal educational paths. The article is focused on the new innovative multidimensional method – My Key- www.my-key.online,- an OER validation tool which can be used along with the more traditional/official assessment procedures. My Key is a multi-dimensional electronic evaluation tool, an ‘e-portfolio’ where students can display their work in and out of school supported by reliable evidence. This is connected to school subjects and transversal competences. In doing so the students have to reflect on their own learning, their progress as well as their personal, academic and career development planning. The study also centres on the way the method was implemented in Romania: its main beneficiaries, steps, feedback received from the participants and conclusions drawn after the completion of the project.