The final objectives of the CASIMIR project are: 1) to develop a didactic tool for teaching comprehension, adapted to different school levels in the countries participating in the project; 2) to develop educational resources for the class, which can also be useful for teacher training in this field; 3) to compare and understand the performance of students from participating countries in the PIRLS and PISA programs and; 4) to disseminate these resources by creating an observatory of practices.