Science is precise. We help you master it.
Focused science olympiad training: solid concepts, step-by-step practice, and clear explanations, from your first class to the national selection.
Why learn at Presisi?
Not just drilling problems: we build the way you think.
- 01
Concepts first, tricks later
Core understanding comes before shortcuts, so you can handle problems you have never seen.
- 02
Step-by-step practice
Problems go from easy to challenging, each with a full explanation.
- 03
Regular schedule
Weekly classes that fit around school.
- 04
Ready for selection
Simulations in the official selection style, so test day holds no surprises.
Training programs
Online is open, in-person is coming soon.
Online · Enrollment open
Online OSN Training
Live interactive classes from home for primary to senior high: concepts, graded practice, and explanations with coaches.
Contact our team for fee information→
In person · Coming soon
In-Person OSN Training
Intensive face-to-face classes with coaches. Coming soon: register your interest to hear first.
Announced with the schedule→
Learn from home
Live classes that feel like a classroom
Ask the coach directly, work on problems together, and get explanations in the same session.
- Live & interactive
- Practice + explanations
- Primary to senior high
- Lesson recaps
Choose your field
Each field has its own learning path, from primary to senior high.
Primary School
Junior High School
Senior High School
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.
Upcoming events & competitions
Tryouts, webinars, and competitions you can join.
Webinar
Webinar: Strategies for the Provincial OSN
An online session for students, parents, and coaching teachers: understanding the selection stages and building a study plan.
- 17 October 2026
- Online
Tryout
Presisi Grand OSN-K Tryout
An online district/city-level OSN simulation with format, duration, and difficulty close to the real test.
- 7 November 2026 – 8 November 2026
- Online
Competition
Presisi Science Competition (In Person)
An in-person science competition for primary and junior high. Coming soon: final location and schedule to be announced.
- 17 December 2026
- Location to be announced
Latest news
Three Habits Before Writing Your First Formula
Read it all, sketch the system, list what you know: simple, yet often skipped.
Understanding the OSN Stages: District, Province, National
The OSN selection is tiered. Understand each stage so your preparation stays focused.
Online OSN Training Registration Is Open
Live online OSN classes for primary to senior high are now open for registration. In-person classes will follow.
Frequently asked questions
What parents, students, and teachers ask us most.
01What is Presisi Academy?
A science olympiad (OSN) training institute for primary, junior high, and senior high. We focus on building conceptual understanding, then training reasoning through graded problems.
02Which school levels do you cover?
Primary, junior high, and senior high, following the current OSN fields: primary (Mathematics, Science, Social Studies), junior high (Mathematics, Science, Social Studies), and senior high (9 fields).
03Are classes held online?
Yes. Online OSN training is open. In-person classes are being prepared and will be announced on the News and Events pages.
04What are the online classes like?
Weekly live interactive classes: concept building, graded practice, explanations with coaches, and official-style selection simulations.
05When will in-person classes open?
Once the interest quota is met. Register your interest on WhatsApp to hear about the schedule and location first.
06Can I take more than one field?
Yes. Talk to our team first so the schedule and workload stay realistic.
07What do I need for online classes?
A laptop/computer or tablet, a stable internet connection, and stationery for practice.
08How do I register?
Message us on our official WhatsApp. Our team will help with a consultation, class placement, and fee information.
09Is there an entrance exam?
There is no entrance selection. At the start we run a short diagnosis to map starting skills so the material fits.
10Can schools partner with you?
Yes. Contact us on WhatsApp to discuss coaching for your students.