There are many opportunities at Ressun lukio to be international. Along with the approximately 30 students who go abroad as exchange students each year, Ressu students and teachers participate in shorter exchange programs with various schools around the world. The countries and schools are listed below.
- Academic Gymnasium of the St. Petersburg State University, Pietari
- Thomas-Mann-Gymnasium, München
- The High School of Peking University, Peking
- Niulanshan No. 1 High School, Peking
- The High School Affiliated to Renmin University of China, Peking
- Lycée de Saint-Just, Lyon
- Tallinn English College, Tallinna
- Bilborough College, Nottingham
Students are responsible for paying some of the costs towards exchange programs, and the costs vary according to the project. In most cases, students stay in host families, and then are required to host the students from the visiting school when they are in Finland.
Information regarding the various exchange programs is distributed in the group meetings, as well as posted on the internal TV.