Project based on long-term study mobilities of the students from three countries (FI, SK, ES) and the cooperation of the involved teachers. The students experience a new school system, get insight into the different culture, develop their personalities and skills, bring them back to their home schools, share with the others and contribute to the schools internationalisation. The teachers involved cooperate together virtually via some online platforms (e-mail, facebook, whatsapp groups or TwinSpace) in order to create conditions for better learning environment for the students on mobilities, to come up with the common assessment criteria for the skills recognition, etc.