The cooperation between our four schools started a few years ago, when we decided to start an Erasmus+ project entilted "21st Century Classics", with the Spanish school as the coordinator. The starting point of the cooparation was an eTwinning project called "Fascinating Classics". However, it didn't get the NA's approval. Our next attempt was a project coordinated by the Polish school, "Happy at school", which was not successful either. Meanwhile, the Lithuanian and Greek schools started the cooperation on "Stars in Europe", an Erasmus+ project, and the Polish and Greek school launched another eTwinning project, "My World in Pictures". After a lot of positive experiences with each other we decided to try again and applied with the project "The Family We Call Europe", coordinated by the Polish school. And this time we were lucky!