Schools from different cities, different countries, will be united around the Wishing a rainbow for the world project, which aims to develop the SDGs of the 2030 Agenda in its diverse dimensions. Each school/class will choose an SDG to work on in collaboration with the school's different subjects. The main idea behind the project is that everyone reflects on the fulfillment of the Agenda 2030 proposals, ending up with a rainbow of hope for a better world.