The First short-term joint staff training event took place in Ludbreg, Croatia from 4 to 9 in July 2022. The main goal of this event was to increase the theoretical background of the schools’ teachers on Climate change-related issues. Teachers becsme familiar with the newest Climate Change scenarios (developed by world-known experts) as well as got increased acknowledgment about the utilization of renewable energy resources (solar, wind, geothermal energy) and measures that will lead towards sustainable transportation as the most important measures that present generations must take in tackling of this biggest mankind challenge. Teachers had a training session for the creation of their own educational approach for the implementation of acquired acknowledgment in their everyday school classes. In this session, they jointly worked with experts for Climate Change.