One form of actualization of collaboration carried out by the Physics Education Study Program, Department of Physics Education, FMIPA UNY, is sending lecturers to be examiners for student final assignments at partner campuses. On Wednesday, December 14, 2022, Prof. Dr. Edi Istiyono, M.Si (lecturer in physics education at FMIPA UNY) was a student examiner at Universitas Siliwangi. Riza Hasanudin (Undergraduate Student) was tested by three examiners, namely Rahmad Rizal, M.Pd (Unsil), Dr. H. Endang Surahman, M.Pd (Unsil), and Prof. Dr. Edi Istiyono, M.Si (UNY). Hopefully, this activity can be a form of sustainable friendship so that the  Physics Education Study Program, Department of Physics, FMIPA UNY, and Physics Education Study Program, Universitas Siliwangi, can progress and develop together.