Announcement Date: July 1, 2004After finishing the junior high school education, I continued my study in Sedes Sapientiae Senior High School, Ambarawa, Semarang Regency. I lived faraway from home, in the school dormitory along with the other 30 boys. In the second grade (or eleventh grade, according to the new curriculum), I enter the Science Class.
- In this school, I have got the achievement (1st winner from Semarang Regency) by winning the Physics Olympiad (under IPhO - Indonesian Physics Olympiad). I joined the Tim Olimpiade Fisika Indonesia (TOFI), compete with the other students in Indonesia.
- Instead of having formal studies, I also joined the orchestra class, Organisasi Siswa Intra Sekolah (OSIS), music group band (Realthink) and also Basketball Team.