Senior High School
OSN Coaching SMA
Intensive coaching across all nine OSN senior high fields.
MathematicsFrom algebra to writing clean proofs.
PhysicsModelling phenomena and reading graphs carefully.
ChemistryReasoning about reactions, not just memorising.
BiologyUnderstanding living things through experimental data.
InformaticsFrom understanding the task to designing algorithms.
AstronomyCelestial mechanics and observational data.
EconomicsReading economic data and analysing cases.
Earth ScienceGeology, atmosphere, and oceans through diagrams and data.
GeographyMaps, spatial analysis, and regions.
Preparing for OSN Senior High at Presisi
OSN Senior High at Presisi Academy
OSN Senior High training helps students prepare for the selection from district/city to national level. Available fields: Mathematics, Physics, Chemistry, Biology, Informatics, Astronomy, Economics, Earth Science and Geography.
Each field has its own page with the topic scope, official guide, a worked example, and how progress is evaluated.
Selection stages
- OSN-S (school): an internal selection where schools register their representatives per field.
- OSN-K (district/city): the first selection stage, open to students from schools across Indonesia.
- OSN-P (provincial): for the best students from the district/city stage, with deeper problems.
- OSN-N (national): the peak of the selection for top provincial scorers, which can include a semifinal and a final.
Questions about OSN Senior High
01Which fields are in OSN Senior High?
The OSN Senior High fields we coach: Mathematics, Physics, Chemistry, Biology, Informatics, Astronomy, Economics, Earth Science and Geography.
02Can Senior High beginners join the training?
Yes. Training starts with a starting-skill diagnosis and concept building before selection-level practice.
03How do I register for OSN Senior High training?
Contact our team through the contact page or WhatsApp for a consultation and class information.