The aim of the partnership between five secondary schools from Poland, Germany, Italy, Hungary, and Austria was to develop correct digital habits in students aged 15-19 that are conducive to teaching, learning, direct interaction, mental and physical wellbeing, thereby strengthening their mental abilities and direct relationships with other students, and developing effective teaching and educational activities in this area. Proper digital habits are an essential element of the responsible use of information and communication technologies, and are therefore part of the digital competences that, along with other key competences, we aimed to develop in students at the European level, so that they would be provided with a strong foundation for international engagement. Through the project, we also wanted to recruit and train new teachers to provide as many students as possible with high-level key competences and professional instruction in the field of practical intercultural education. We also wanted to draw parents' attention to the seriousness of the problem and encourage them to address it at home. It was crucial to promote the idea of teaching correct digital habits and intercultural competences at school.
The first need addressed by the project was the decline in mental abilities in terms of learning, social relations and psychophysical condition among students aged 15-19 due to the constant use of mobile Internet. In order for young people who cannot imagine life without a smartphone to use digital tools responsibly, without harming their health, they need to be prepared for this, stimulated to think and inspired to act appropriately. It has therefore become necessary to develop preventive and remedial measures that would help teachers foster healthy digital habits among students. International cooperation between schools increased the chances of finding more universal and effective solutions. In addition to clear gaps in digital skills, we noticed a low level of intercultural competence among students, coupled with a high level of interest in the European education and labour market. In order to provide students with professional education tailored to the globalized and digital world, it is necessary to increase the number of teachers who understand the need to develop digital habits and intercultural competences at school and have some experience in this area.