Ecoeducation has grown into a field of science by now, with an expanding professional and legal background. By means of legalisation, it reaches education, pedagogy and off-school training. Ecoeducation, along with green pedagogy as an important part of it, might begin, de iure, in kindergarten, and is supposed to be ended, de facto, at the end of a lifelong learning. A proper professional, social and legal normative framework is needed for this process. Ecoeducation has come from international public law, and goes onto the level of practice and individual reality. Intercompatibility is necessitated for a norm-adequate cooperation among states and state-forming factors. In lack of it, ecoeducation cannot be effective enough.