We are a group teachers who have decided to collaborate to offer our students the opportunity to work with other students in Europe in something that might be curricular in their studies, environmentally active and also entertaining. We decided that escape rooms could be a nice umbrella to cover it all. Maths, Biology and English teachers will work together in different countries to reach the same goals.Concerning biology, we would like to deal especially with environmental issues (environmental factors, their influence on human beings, regulation of ecosystems, how human beings adapt themselves to their surroundings, etc) and perhaps some genetic issues too (sex inheritance, illnesses). The aim will be creating challenges with the information they have learnt. Maths teachers will help students design maths challenges, finally English teachers will help with the language and with the information exchange and social contacts among students.