OSN SMA
OSN Coaching Earth Science SMA
Geology, atmosphere, and oceans through diagrams and data.
Earth Science Senior High coaching builds conceptual understanding first, then trains reasoning through graded problems, from school level to the OSN selection.
Who it's for
Senior High students who want to take part in the OSN Earth Science field, whether beginners or returning participants.
Stages & test format
OSN-S (School)
January – February 2026Selection at each school; schools register up to 5 students per field.
OSN-K (District/City)
18–19 June 2026100 questions multiple choice
Duration: 2 hours
OSN-P (Province)
27–29 July 2026Theory: 50 MC + 5 essays · Practical: 2 data-analysis questions
Duration: 2 hours + 1 hours
National Semifinal
12 August 202632 MC theory + data-analysis essays; online oral test
Duration: 40 + 80 + 150 minutes
National Final
14–20 September 2026 (in person)Theory (40 MC + 5 essays), apparatus test, fieldwork, problem review
Duration: 3 days
Official syllabus
Theory test (IGEO reference)
- Geology: Earth's formation & interior, plate tectonics, rock cycle, minerals, geomorphology, stratigraphy, seismology, geological hazards
- Oceanography: hydrological cycle, coastal & seafloor morphology, seawater properties, currents, waves, tides
- Meteorology: atmosphere, air masses, wind, clouds & precipitation, global climate, hydrometeorological hazards
- Planetary science: celestial motion & orbits, coordinate & time systems, solar system, space weather
Data analysis & practicals
- Basic maths & statistics, graphs, diagrams, maps
- Reading topographic, geological, weather, and star maps
- Geology, meteorology, oceanography, astronomy instruments; field data collection & presentation
Assessment
Weekly practice with explanations
Short quizzes per topic
Official-style selection simulations
Source: 2026 OSN Guidelines for Senior High (Pusat Prestasi Nasional). Dates may change, always check official Puspresnas announcements.
FAQ OSN Earth Science SMA
01What does OSN Earth Science SMA cover?
Theory test (IGEO reference): Geology: Earth's formation & interior, plate tectonics, rock cycle, minerals, geomorphology, stratigraphy, seismology, geological hazards; Oceanography: hydrological cycle, coastal & seafloor morphology, seawater properties, currents, waves, tides; Meteorology: atmosphere, air masses, wind, clouds & precipitation, global climate, hydrometeorological hazards; Planetary science: celestial motion & orbits, coordinate & time systems, solar system, space weather. Data analysis & practicals: Basic maths & statistics, graphs, diagrams, maps; Reading topographic, geological, weather, and star maps; Geology, meteorology, oceanography, astronomy instruments; field data collection & presentation
02What are the OSN Earth Science SMA stages and formats?
OSN-S (School) (January – February 2026): Selection at each school; schools register up to 5 students per field.. OSN-K (District/City) (18–19 June 2026): 100 questions multiple choice, 2 hours. OSN-P (Province) (27–29 July 2026): Theory: 50 MC + 5 essays · Practical: 2 data-analysis questions, 2 hours + 1 hours. National Semifinal (12 August 2026): 32 MC theory + data-analysis essays; online oral test, 40 + 80 + 150 minutes. National Final (14–20 September 2026 (in person)): Theory (40 MC + 5 essays), apparatus test, fieldwork, problem review, 3 days.
03Who is OSN Earth Science SMA training for?
Senior High students who want to take part in the OSN Earth Science field, whether beginners or returning participants.
04Is there online OSN Earth Science SMA training?
Yes. OSN Earth Science SMA training at Presisi Academy runs online with live classes, graded practice, and selection simulations. In-person classes are coming soon.