Portugal has a compulsory 12-year education system between ages 6-18. Education is free and universal from age 4. Evaluation is both formative and summative, as well as internal and external, with external exams given at various stages. Basic education lasts 9 years and is divided into cycles, with the goal of providing a common background. The school participates in numerous Erasmus+ projects to promote mobility, cultural exchange, and 21st century skills among students and teachers from multiple countries. Teachers and students report benefits from exchanges including modernized classrooms, use of technology, increased motivation and interest in travel and life beyond their island.