Main · Organizer · 2023 – now
OSBANAS
Olimpiade Sains, Sosial, dan Bahasa Nasional: a national online olympiad for junior and senior high school students, run by the Pejuang OSN community.
- Editions since Feb 2023
- 4
- Events
- 20
- Instagram followers
- 103K
- Online
- 100%
Why it exists
OSBANAS gives students anywhere in Indonesia a fair, well-run olympiad without having to travel. Experienced problem setters write the problems, and every participant gets worked explanations afterward.
Schools list OSBANAS medals on their achievement pages, so a result here counts toward a student's portfolio.
Who can enter
Active junior high (SMP/MTs) and senior high (SMA/MA/SMK) students across Indonesia. Homeschoolers and students at Indonesian schools abroad can enter too.
Gold medalists in every event go into a draw for a grand prize worth tens of millions of rupiah. Winners pay nothing beyond registration: prizes, medals and shipping are covered.
Events
Senior high · 16
- Accounting
- Astronomy
- Biology
- Capital markets
- Chemistry
- Earth science
- Economics
- English
- Geography
- History
- Informatics
- Mathematics
- Medicine
- Pancasila education
- Physics
- Sociology
Junior high · 4
- English
- Mathematics
- Science
- Social studies
Screens
Fig. 2The page on a phone 
Fig. 3The 20 events
From participants
“The problems were fun and made me think hard. The explanations really helped me look back at how I did after the competition.”
“Well organized and on time, and every piece of information arrived quickly and clearly.”
My role
I organize OSBANAS through PT Pejuang Indonesia Cerdas, the company behind Pejuang OSN & Prestasi.
Timeline
- First edition.
- Four editions held.
- Registration for the fifth edition opens (tentative).