Primary Integration School No. 21 in Koszalin, Poland celebrates the Day of Europe and hosts an Open Day each year to promote the school. On the Day of Europe, classes choose a European country to present through performances of songs, dances, and cultural displays of art, geography and history. Students wear traditional costumes and regional foods are served. The Open Day allows future students and parents to observe classroom activities and for children to participate in demonstrations to learn about the school. A ceremony is held where new seven-year-old students officially take an oath to become students of the school.